./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8 --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 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:15:54,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:15:54,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:15:54,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:15:54,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:15:54,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:15:54,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:15:54,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:15:54,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:15:54,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:15:54,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:15:54,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:15:54,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:15:54,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:15:54,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:15:54,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:15:54,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:15:54,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:15:54,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:15:54,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:15:54,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:15:54,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:15:54,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:15:54,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:15:54,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:15:54,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:15:54,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:15:54,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:15:54,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:15:54,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:15:54,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:15:54,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:15:54,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:15:54,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:15:54,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:15:54,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:15:54,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:15:54,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:15:54,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:15:54,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:15:54,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:15:54,582 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 02:15:54,642 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:15:54,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:15:54,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:15:54,645 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:15:54,645 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:15:54,645 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:15:54,645 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:15:54,646 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:15:54,646 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:15:54,646 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:15:54,647 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:15:54,648 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:15:54,648 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:15:54,648 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:15:54,649 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:15:54,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 02:15:54,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 02:15:54,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:15:54,651 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:15:54,651 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 02:15:54,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:15:54,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:15:54,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:15:54,652 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 02:15:54,652 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 02:15:54,652 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 02:15:54,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:15:54,655 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:15:54,655 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:15:54,655 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:15:54,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:15:54,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:15:54,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:15:54,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:15:54,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:15:54,657 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:15:54,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:15:54,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:15:54,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:15:54,658 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_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 [2021-11-07 02:15:55,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:15:55,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:15:55,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:15:55,080 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:15:55,080 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:15:55,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2021-11-07 02:15:55,160 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/data/21a076f22/a29ae325a40d4557b2bfe90d5713ae55/FLAGf378ad8a3 [2021-11-07 02:15:55,927 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:15:55,930 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2021-11-07 02:15:55,961 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/data/21a076f22/a29ae325a40d4557b2bfe90d5713ae55/FLAGf378ad8a3 [2021-11-07 02:15:55,979 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/data/21a076f22/a29ae325a40d4557b2bfe90d5713ae55 [2021-11-07 02:15:55,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:15:55,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:15:55,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:15:55,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:15:55,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:15:55,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:55" (1/1) ... [2021-11-07 02:15:55,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fc51a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:55, skipping insertion in model container [2021-11-07 02:15:55,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:55" (1/1) ... [2021-11-07 02:15:56,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:15:56,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:15:56,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:15:56,505 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:15:56,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@108a9b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:56, skipping insertion in model container [2021-11-07 02:15:56,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:15:56,506 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:15:56,508 INFO L168 Benchmark]: Toolchain (without parser) took 523.39 ms. Allocated memory is still 94.4 MB. Free memory was 55.0 MB in the beginning and 64.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:15:56,509 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 73.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:15:56,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.62 ms. Allocated memory is still 94.4 MB. Free memory was 54.8 MB in the beginning and 64.2 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:15:56,511 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 73.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 520.62 ms. Allocated memory is still 94.4 MB. Free memory was 54.8 MB in the beginning and 64.2 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8 --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 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:15:58,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:15:58,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:15:58,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:15:58,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:15:58,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:15:58,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:15:58,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:15:58,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:15:58,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:15:58,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:15:58,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:15:58,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:15:58,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:15:58,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:15:58,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:15:58,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:15:58,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:15:58,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:15:58,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:15:58,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:15:58,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:15:58,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:15:58,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:15:59,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:15:59,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:15:59,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:15:59,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:15:59,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:15:59,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:15:59,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:15:59,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:15:59,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:15:59,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:15:59,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:15:59,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:15:59,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:15:59,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:15:59,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:15:59,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:15:59,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:15:59,020 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 02:15:59,066 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:15:59,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:15:59,067 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:15:59,068 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:15:59,068 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:15:59,068 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:15:59,068 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:15:59,069 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:15:59,069 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:15:59,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 02:15:59,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 02:15:59,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:15:59,072 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:15:59,072 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 02:15:59,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:15:59,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:15:59,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:15:59,073 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 02:15:59,074 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 02:15:59,074 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 02:15:59,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:15:59,074 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:15:59,075 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:15:59,075 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:15:59,075 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:15:59,075 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:15:59,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:15:59,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:15:59,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:15:59,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:15:59,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:15:59,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:15:59,077 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:15:59,078 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:15:59,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:15:59,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:15:59,078 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_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 [2021-11-07 02:15:59,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:15:59,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:15:59,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:15:59,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:15:59,497 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:15:59,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2021-11-07 02:15:59,570 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/data/9a0a40fa1/5dd7d55b545148aeb51bdfc49dd212d7/FLAG5af709cf1 [2021-11-07 02:16:00,166 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:16:00,167 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2021-11-07 02:16:00,189 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/data/9a0a40fa1/5dd7d55b545148aeb51bdfc49dd212d7/FLAG5af709cf1 [2021-11-07 02:16:00,477 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/data/9a0a40fa1/5dd7d55b545148aeb51bdfc49dd212d7 [2021-11-07 02:16:00,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:16:00,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:16:00,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:00,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:16:00,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:16:00,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:00" (1/1) ... [2021-11-07 02:16:00,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73cc125d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:00, skipping insertion in model container [2021-11-07 02:16:00,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:00" (1/1) ... [2021-11-07 02:16:00,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:16:00,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:16:01,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:01,087 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:16:01,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:16:01,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:01,190 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:16:01,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:01,365 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:16:01,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:01 WrapperNode [2021-11-07 02:16:01,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:01,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:01,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:16:01,368 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:16:01,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:01" (1/1) ... [2021-11-07 02:16:01,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:01" (1/1) ... [2021-11-07 02:16:01,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:01,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:16:01,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:16:01,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:16:01,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:01" (1/1) ... [2021-11-07 02:16:01,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:01" (1/1) ... [2021-11-07 02:16:01,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:01" (1/1) ... [2021-11-07 02:16:01,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:01" (1/1) ... [2021-11-07 02:16:01,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:01" (1/1) ... [2021-11-07 02:16:01,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:01" (1/1) ... [2021-11-07 02:16:01,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:01" (1/1) ... [2021-11-07 02:16:01,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:16:01,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:16:01,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:16:01,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:16:01,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:01" (1/1) ... [2021-11-07 02:16:01,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:01,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:16:01,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:16:01,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:16:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:16:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:16:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:16:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:16:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:16:01,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:16:01,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:16:01,882 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-07 02:16:01,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:01 BoogieIcfgContainer [2021-11-07 02:16:01,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:16:01,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:16:01,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:16:01,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:16:01,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:16:00" (1/3) ... [2021-11-07 02:16:01,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fadd27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:01, skipping insertion in model container [2021-11-07 02:16:01,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:01" (2/3) ... [2021-11-07 02:16:01,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fadd27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:01, skipping insertion in model container [2021-11-07 02:16:01,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:01" (3/3) ... [2021-11-07 02:16:01,905 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test4-2.i [2021-11-07 02:16:01,911 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:16:01,921 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-07 02:16:01,964 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:16:01,970 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:16:01,970 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 02:16:02,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:02,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 02:16:02,013 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:02,014 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 02:16:02,014 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-07 02:16:02,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:02,020 INFO L85 PathProgramCache]: Analyzing trace with hash 889509386, now seen corresponding path program 1 times [2021-11-07 02:16:02,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:02,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798640575] [2021-11-07 02:16:02,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:02,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:02,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:02,050 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:02,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:16:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:02,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:16:02,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:02,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:02,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:02,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:02,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798640575] [2021-11-07 02:16:02,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798640575] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:02,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:02,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:16:02,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425365958] [2021-11-07 02:16:02,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:16:02,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:02,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:16:02,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:16:02,268 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 22 states have internal predecessors, (25), 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) [2021-11-07 02:16:02,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:02,354 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2021-11-07 02:16:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:16:02,357 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 [2021-11-07 02:16:02,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:02,366 INFO L225 Difference]: With dead ends: 75 [2021-11-07 02:16:02,366 INFO L226 Difference]: Without dead ends: 67 [2021-11-07 02:16:02,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:16:02,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-07 02:16:02,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 23. [2021-11-07 02:16:02,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.5625) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-11-07 02:16:02,403 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 6 [2021-11-07 02:16:02,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:02,404 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-11-07 02:16:02,404 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) [2021-11-07 02:16:02,405 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-11-07 02:16:02,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 02:16:02,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:02,405 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 02:16:02,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:02,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:02,626 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-07 02:16:02,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:02,631 INFO L85 PathProgramCache]: Analyzing trace with hash 889568968, now seen corresponding path program 1 times [2021-11-07 02:16:02,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:02,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053290170] [2021-11-07 02:16:02,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:02,635 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:02,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:02,637 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:02,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:16:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:02,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:16:02,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:02,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:02,751 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:02,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053290170] [2021-11-07 02:16:02,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053290170] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:02,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:02,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:16:02,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029033787] [2021-11-07 02:16:02,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:16:02,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:02,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:16:02,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:16:02,755 INFO L87 Difference]: Start difference. First operand 23 states and 25 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) [2021-11-07 02:16:02,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:02,782 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-11-07 02:16:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:16:02,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 02:16:02,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:02,784 INFO L225 Difference]: With dead ends: 32 [2021-11-07 02:16:02,784 INFO L226 Difference]: Without dead ends: 31 [2021-11-07 02:16:02,785 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:16:02,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-07 02:16:02,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2021-11-07 02:16:02,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:02,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-07 02:16:02,796 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 6 [2021-11-07 02:16:02,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:02,797 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-07 02:16:02,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:02,798 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-07 02:16:02,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 02:16:02,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:02,804 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:02,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:03,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:03,016 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-07 02:16:03,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:03,017 INFO L85 PathProgramCache]: Analyzing trace with hash 119384781, now seen corresponding path program 1 times [2021-11-07 02:16:03,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:03,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916986506] [2021-11-07 02:16:03,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:03,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:03,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:03,019 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:03,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:16:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:03,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:16:03,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:03,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:03,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:03,159 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:03,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916986506] [2021-11-07 02:16:03,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916986506] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:03,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:03,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:16:03,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922305846] [2021-11-07 02:16:03,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:16:03,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:03,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:16:03,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:16:03,168 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:03,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:03,195 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-11-07 02:16:03,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:16:03,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 02:16:03,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:03,197 INFO L225 Difference]: With dead ends: 20 [2021-11-07 02:16:03,197 INFO L226 Difference]: Without dead ends: 20 [2021-11-07 02:16:03,198 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:16:03,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-07 02:16:03,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-07 02:16:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:03,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-11-07 02:16:03,204 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 8 [2021-11-07 02:16:03,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:03,204 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-11-07 02:16:03,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:03,205 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-11-07 02:16:03,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 02:16:03,206 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:03,206 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:03,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:03,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:03,417 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-07 02:16:03,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:03,418 INFO L85 PathProgramCache]: Analyzing trace with hash -594039032, now seen corresponding path program 1 times [2021-11-07 02:16:03,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:03,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056416307] [2021-11-07 02:16:03,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:03,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:03,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:03,420 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:03,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:16:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:03,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:16:03,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:03,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:03,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:03,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056416307] [2021-11-07 02:16:03,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056416307] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:03,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:03,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 02:16:03,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561883849] [2021-11-07 02:16:03,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:16:03,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:03,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:16:03,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:16:03,618 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:03,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:03,720 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-11-07 02:16:03,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:16:03,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 02:16:03,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:03,727 INFO L225 Difference]: With dead ends: 33 [2021-11-07 02:16:03,727 INFO L226 Difference]: Without dead ends: 33 [2021-11-07 02:16:03,727 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:16:03,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-07 02:16:03,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2021-11-07 02:16:03,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:03,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-11-07 02:16:03,730 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 9 [2021-11-07 02:16:03,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:03,730 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-11-07 02:16:03,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:03,731 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-11-07 02:16:03,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 02:16:03,731 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:03,731 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:03,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:03,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:03,943 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-07 02:16:03,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:03,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1237187795, now seen corresponding path program 1 times [2021-11-07 02:16:03,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:03,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946297726] [2021-11-07 02:16:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:03,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:03,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:03,946 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:03,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:16:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:04,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:16:04,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:04,052 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 [2021-11-07 02:16:04,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:04,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:04,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:04,105 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:04,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946297726] [2021-11-07 02:16:04,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946297726] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:04,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:04,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:16:04,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831674462] [2021-11-07 02:16:04,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:16:04,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:04,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:16:04,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:16:04,108 INFO L87 Difference]: Start difference. First operand 23 states and 24 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) [2021-11-07 02:16:04,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:04,153 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-11-07 02:16:04,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:16:04,154 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 [2021-11-07 02:16:04,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:04,155 INFO L225 Difference]: With dead ends: 24 [2021-11-07 02:16:04,155 INFO L226 Difference]: Without dead ends: 24 [2021-11-07 02:16:04,155 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:16:04,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-07 02:16:04,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2021-11-07 02:16:04,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 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) [2021-11-07 02:16:04,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-11-07 02:16:04,158 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2021-11-07 02:16:04,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:04,158 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-11-07 02:16:04,159 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) [2021-11-07 02:16:04,159 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-11-07 02:16:04,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 02:16:04,159 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:04,159 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:04,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:04,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:04,371 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-07 02:16:04,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:04,371 INFO L85 PathProgramCache]: Analyzing trace with hash 359142378, now seen corresponding path program 1 times [2021-11-07 02:16:04,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:04,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477907064] [2021-11-07 02:16:04,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:04,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:04,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:04,373 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:04,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:16:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:04,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:16:04,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:04,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:04,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:04,518 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:04,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477907064] [2021-11-07 02:16:04,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477907064] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:04,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:04,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:16:04,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870242327] [2021-11-07 02:16:04,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:16:04,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:04,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:16:04,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:16:04,521 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:04,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:04,552 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-11-07 02:16:04,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:16:04,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-11-07 02:16:04,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:04,553 INFO L225 Difference]: With dead ends: 17 [2021-11-07 02:16:04,553 INFO L226 Difference]: Without dead ends: 17 [2021-11-07 02:16:04,554 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:16:04,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-07 02:16:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-07 02:16:04,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-11-07 02:16:04,557 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2021-11-07 02:16:04,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:04,557 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-11-07 02:16:04,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:04,558 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-11-07 02:16:04,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 02:16:04,558 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:04,558 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:04,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:04,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:04,769 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-07 02:16:04,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:04,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1751488111, now seen corresponding path program 1 times [2021-11-07 02:16:04,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:04,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673897698] [2021-11-07 02:16:04,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:04,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:04,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:04,773 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:04,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:16:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:04,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:16:04,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:05,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:05,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:05,074 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:05,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673897698] [2021-11-07 02:16:05,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673897698] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:05,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:05,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-07 02:16:05,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913469888] [2021-11-07 02:16:05,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:16:05,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:05,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:16:05,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:16:05,076 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:05,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:05,221 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2021-11-07 02:16:05,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 02:16:05,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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 [2021-11-07 02:16:05,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:05,223 INFO L225 Difference]: With dead ends: 47 [2021-11-07 02:16:05,223 INFO L226 Difference]: Without dead ends: 47 [2021-11-07 02:16:05,224 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:16:05,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-07 02:16:05,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 16. [2021-11-07 02:16:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:05,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-11-07 02:16:05,227 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2021-11-07 02:16:05,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:05,227 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-11-07 02:16:05,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:05,227 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-11-07 02:16:05,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 02:16:05,227 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:05,227 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:05,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:05,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:05,428 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-07 02:16:05,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:05,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1538443468, now seen corresponding path program 1 times [2021-11-07 02:16:05,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:05,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681841816] [2021-11-07 02:16:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:05,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:05,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:05,430 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:05,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:16:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:05,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:16:05,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:05,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:16:05,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-07 02:16:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:05,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:05,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:05,867 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:05,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681841816] [2021-11-07 02:16:05,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681841816] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:05,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:05,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-07 02:16:05,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901216404] [2021-11-07 02:16:05,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:16:05,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:05,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:16:05,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:16:05,869 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:06,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:06,142 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2021-11-07 02:16:06,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 02:16:06,143 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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 13 [2021-11-07 02:16:06,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:06,144 INFO L225 Difference]: With dead ends: 37 [2021-11-07 02:16:06,144 INFO L226 Difference]: Without dead ends: 37 [2021-11-07 02:16:06,144 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-11-07 02:16:06,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-07 02:16:06,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2021-11-07 02:16:06,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:06,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-11-07 02:16:06,147 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 13 [2021-11-07 02:16:06,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:06,148 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-11-07 02:16:06,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:06,148 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-11-07 02:16:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 02:16:06,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:06,149 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:06,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:06,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:06,364 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-07 02:16:06,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:06,365 INFO L85 PathProgramCache]: Analyzing trace with hash -2055459250, now seen corresponding path program 1 times [2021-11-07 02:16:06,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:06,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984837392] [2021-11-07 02:16:06,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:06,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:06,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:06,366 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:06,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:16:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:06,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:16:06,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:06,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:06,547 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:06,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984837392] [2021-11-07 02:16:06,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984837392] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:06,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:06,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:16:06,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015215322] [2021-11-07 02:16:06,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:16:06,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:06,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:16:06,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:16:06,549 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:06,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:06,578 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2021-11-07 02:16:06,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:16:06,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 02:16:06,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:06,580 INFO L225 Difference]: With dead ends: 26 [2021-11-07 02:16:06,580 INFO L226 Difference]: Without dead ends: 24 [2021-11-07 02:16:06,580 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:16:06,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-07 02:16:06,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2021-11-07 02:16:06,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:06,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-07 02:16:06,582 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-11-07 02:16:06,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:06,583 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-07 02:16:06,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:06,583 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-07 02:16:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 02:16:06,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:06,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:06,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:06,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:06,794 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-07 02:16:06,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:06,795 INFO L85 PathProgramCache]: Analyzing trace with hash 447107319, now seen corresponding path program 1 times [2021-11-07 02:16:06,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:06,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571347074] [2021-11-07 02:16:06,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:06,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:06,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:06,797 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:06,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:16:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:06,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:16:06,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:06,917 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 02:16:06,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2021-11-07 02:16:09,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:09,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:17,880 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:17,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571347074] [2021-11-07 02:16:17,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571347074] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:17,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:17,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 15 [2021-11-07 02:16:17,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113438843] [2021-11-07 02:16:17,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 02:16:17,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:17,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 02:16:17,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=207, Unknown=5, NotChecked=0, Total=272 [2021-11-07 02:16:17,882 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:26,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:26,607 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-11-07 02:16:26,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 02:16:26,608 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 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 14 [2021-11-07 02:16:26,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:26,608 INFO L225 Difference]: With dead ends: 22 [2021-11-07 02:16:26,609 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 02:16:26,609 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=133, Invalid=414, Unknown=5, NotChecked=0, Total=552 [2021-11-07 02:16:26,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 02:16:26,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 02:16:26,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:26,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 02:16:26,610 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-11-07 02:16:26,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:26,610 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 02:16:26,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:26,610 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 02:16:26,610 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 02:16:26,612 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 02:16:26,613 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 02:16:26,613 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 02:16:26,613 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 02:16:26,613 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 02:16:26,613 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 02:16:26,613 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK [2021-11-07 02:16:26,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:26,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:26,816 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:26,818 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:16:26,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:16:26 BoogieIcfgContainer [2021-11-07 02:16:26,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:16:26,821 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:16:26,821 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:16:26,822 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:16:26,822 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:01" (3/4) ... [2021-11-07 02:16:26,827 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 02:16:26,840 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-07 02:16:26,841 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 02:16:26,841 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 02:16:26,895 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 02:16:26,895 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:16:26,897 INFO L168 Benchmark]: Toolchain (without parser) took 26415.43 ms. Allocated memory was 58.7 MB in the beginning and 100.7 MB in the end (delta: 41.9 MB). Free memory was 35.7 MB in the beginning and 35.8 MB in the end (delta: -110.8 kB). Peak memory consumption was 41.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:26,897 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 58.7 MB. Free memory is still 40.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:16:26,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 883.47 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 35.4 MB in the beginning and 63.5 MB in the end (delta: -28.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:26,899 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.77 ms. Allocated memory is still 83.9 MB. Free memory was 63.5 MB in the beginning and 61.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:26,899 INFO L168 Benchmark]: Boogie Preprocessor took 27.75 ms. Allocated memory is still 83.9 MB. Free memory was 61.4 MB in the beginning and 60.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:26,899 INFO L168 Benchmark]: RCFGBuilder took 436.43 ms. Allocated memory is still 83.9 MB. Free memory was 59.8 MB in the beginning and 49.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:26,900 INFO L168 Benchmark]: TraceAbstraction took 24921.63 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 48.8 MB in the beginning and 39.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:26,900 INFO L168 Benchmark]: Witness Printer took 74.27 ms. Allocated memory is still 100.7 MB. Free memory was 39.0 MB in the beginning and 35.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:26,903 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 58.7 MB. Free memory is still 40.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 883.47 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 35.4 MB in the beginning and 63.5 MB in the end (delta: -28.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.77 ms. Allocated memory is still 83.9 MB. Free memory was 63.5 MB in the beginning and 61.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.75 ms. Allocated memory is still 83.9 MB. Free memory was 61.4 MB in the beginning and 60.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 436.43 ms. Allocated memory is still 83.9 MB. Free memory was 59.8 MB in the beginning and 49.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24921.63 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 48.8 MB in the beginning and 39.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. * Witness Printer took 74.27 ms. Allocated memory is still 100.7 MB. Free memory was 39.0 MB in the beginning and 35.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 761]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 761]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 761]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 765]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 24.8s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 167 SDtfs, 302 SDslu, 182 SDs, 0 SdLazy, 374 SolverSat, 69 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 137 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 17.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=8, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 121 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 184 ConstructedInterpolants, 15 QuantifiedInterpolants, 1298 SizeOfPredicates, 16 NumberOfNonLiveVariables, 389 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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 - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-07 02:16:26,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eef81f76-f368-4fae-ac0f-a43b812da55f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE