./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI --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 12544117846b274bd1cb12a6694f8fda1d77f0b1327b2e9a353cfe44563b100a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:37:04,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:37:04,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:37:04,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:37:04,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:37:04,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:37:04,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:37:04,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:37:04,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:37:04,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:37:04,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:37:04,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:37:04,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:37:04,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:37:04,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:37:04,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:37:04,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:37:04,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:37:04,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:37:04,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:37:04,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:37:04,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:37:04,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:37:04,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:37:04,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:37:04,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:37:04,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:37:04,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:37:04,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:37:04,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:37:04,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:37:04,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:37:04,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:37:04,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:37:04,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:37:04,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:37:04,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:37:04,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:37:04,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:37:04,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:37:04,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:37:04,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-03 01:37:04,578 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:37:04,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:37:04,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:37:04,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:37:04,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:37:04,581 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:37:04,581 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:37:04,581 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:37:04,581 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:37:04,582 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:37:04,583 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:37:04,583 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:37:04,584 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:37:04,584 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:37:04,584 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:37:04,584 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:37:04,585 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:37:04,585 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:37:04,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-03 01:37:04,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-03 01:37:04,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:37:04,587 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:37:04,587 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 01:37:04,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:37:04,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:37:04,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:37:04,588 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-03 01:37:04,589 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-03 01:37:04,589 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-03 01:37:04,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:37:04,590 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 01:37:04,590 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:37:04,590 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:37:04,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:37:04,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:37:04,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:37:04,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:37:04,592 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:37:04,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:37:04,592 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:37:04,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:37:04,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:37:04,593 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12544117846b274bd1cb12a6694f8fda1d77f0b1327b2e9a353cfe44563b100a [2022-11-03 01:37:04,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:37:04,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:37:04,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:37:04,882 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:37:04,883 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:37:04,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i [2022-11-03 01:37:04,967 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/data/afd714884/55f00b2bb54546e68c48ef4ec73b5f58/FLAGcd59812c9 [2022-11-03 01:37:05,516 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:37:05,517 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i [2022-11-03 01:37:05,543 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/data/afd714884/55f00b2bb54546e68c48ef4ec73b5f58/FLAGcd59812c9 [2022-11-03 01:37:05,815 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/data/afd714884/55f00b2bb54546e68c48ef4ec73b5f58 [2022-11-03 01:37:05,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:37:05,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:37:05,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:37:05,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:37:05,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:37:05,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:37:05" (1/1) ... [2022-11-03 01:37:05,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dcdfae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:05, skipping insertion in model container [2022-11-03 01:37:05,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:37:05" (1/1) ... [2022-11-03 01:37:05,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:37:05,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:37:06,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:37:06,355 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-03 01:37:06,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7366abdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:06, skipping insertion in model container [2022-11-03 01:37:06,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:37:06,356 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-03 01:37:06,360 INFO L158 Benchmark]: Toolchain (without parser) took 538.88ms. Allocated memory is still 104.9MB. Free memory was 68.9MB in the beginning and 75.5MB in the end (delta: -6.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 01:37:06,361 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 104.9MB. Free memory was 75.6MB in the beginning and 75.6MB in the end (delta: 25.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:37:06,362 INFO L158 Benchmark]: CACSL2BoogieTranslator took 535.80ms. Allocated memory is still 104.9MB. Free memory was 68.6MB in the beginning and 75.5MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 01:37:06,365 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 104.9MB. Free memory was 75.6MB in the beginning and 75.6MB in the end (delta: 25.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 535.80ms. Allocated memory is still 104.9MB. Free memory was 68.6MB in the beginning and 75.5MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI --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 12544117846b274bd1cb12a6694f8fda1d77f0b1327b2e9a353cfe44563b100a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:37:08,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:37:08,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:37:08,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:37:08,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:37:08,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:37:08,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:37:08,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:37:08,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:37:08,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:37:08,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:37:08,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:37:08,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:37:08,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:37:08,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:37:08,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:37:08,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:37:08,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:37:08,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:37:08,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:37:08,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:37:08,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:37:08,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:37:08,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:37:08,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:37:08,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:37:08,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:37:08,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:37:08,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:37:08,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:37:08,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:37:08,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:37:08,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:37:08,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:37:08,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:37:08,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:37:08,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:37:08,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:37:08,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:37:08,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:37:08,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:37:08,705 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-03 01:37:08,729 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:37:08,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:37:08,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:37:08,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:37:08,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:37:08,731 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:37:08,731 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:37:08,732 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:37:08,732 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:37:08,732 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:37:08,733 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:37:08,733 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:37:08,733 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-03 01:37:08,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-03 01:37:08,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:37:08,734 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:37:08,734 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 01:37:08,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:37:08,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:37:08,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:37:08,735 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-03 01:37:08,735 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-03 01:37:08,736 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-03 01:37:08,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:37:08,736 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 01:37:08,736 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 01:37:08,736 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 01:37:08,737 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:37:08,737 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:37:08,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:37:08,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 01:37:08,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:37:08,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:37:08,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:37:08,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:37:08,738 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 01:37:08,739 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 01:37:08,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:37:08,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 01:37:08,739 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_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12544117846b274bd1cb12a6694f8fda1d77f0b1327b2e9a353cfe44563b100a [2022-11-03 01:37:09,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:37:09,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:37:09,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:37:09,087 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:37:09,088 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:37:09,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i [2022-11-03 01:37:09,165 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/data/134e5314f/e60395cac22b49ad8dccb53abd691078/FLAG3bbe86ba3 [2022-11-03 01:37:09,839 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:37:09,840 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i [2022-11-03 01:37:09,852 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/data/134e5314f/e60395cac22b49ad8dccb53abd691078/FLAG3bbe86ba3 [2022-11-03 01:37:10,123 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/data/134e5314f/e60395cac22b49ad8dccb53abd691078 [2022-11-03 01:37:10,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:37:10,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:37:10,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:37:10,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:37:10,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:37:10,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:37:10" (1/1) ... [2022-11-03 01:37:10,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bda9c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:10, skipping insertion in model container [2022-11-03 01:37:10,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:37:10" (1/1) ... [2022-11-03 01:37:10,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:37:10,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:37:10,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:37:10,719 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 01:37:10,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:37:10,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:37:10,816 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:37:10,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:37:10,928 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:37:10,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:10 WrapperNode [2022-11-03 01:37:10,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:37:10,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:37:10,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:37:10,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:37:10,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:10" (1/1) ... [2022-11-03 01:37:10,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:10" (1/1) ... [2022-11-03 01:37:10,988 INFO L138 Inliner]: procedures = 165, calls = 72, calls flagged for inlining = 21, calls inlined = 3, statements flattened = 49 [2022-11-03 01:37:10,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:37:10,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:37:10,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:37:10,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:37:10,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:10" (1/1) ... [2022-11-03 01:37:10,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:10" (1/1) ... [2022-11-03 01:37:11,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:10" (1/1) ... [2022-11-03 01:37:11,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:10" (1/1) ... [2022-11-03 01:37:11,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:10" (1/1) ... [2022-11-03 01:37:11,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:10" (1/1) ... [2022-11-03 01:37:11,016 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:10" (1/1) ... [2022-11-03 01:37:11,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:10" (1/1) ... [2022-11-03 01:37:11,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:37:11,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:37:11,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:37:11,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:37:11,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:10" (1/1) ... [2022-11-03 01:37:11,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:37:11,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:37:11,064 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:37:11,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:37:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:37:11,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:37:11,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:37:11,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:37:11,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:37:11,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:37:11,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:37:11,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:37:11,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:37:11,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:37:11,311 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:37:11,313 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:37:11,547 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:37:11,553 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:37:11,553 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 01:37:11,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:37:11 BoogieIcfgContainer [2022-11-03 01:37:11,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:37:11,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:37:11,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:37:11,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:37:11,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:37:10" (1/3) ... [2022-11-03 01:37:11,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f8d8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:37:11, skipping insertion in model container [2022-11-03 01:37:11,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:10" (2/3) ... [2022-11-03 01:37:11,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f8d8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:37:11, skipping insertion in model container [2022-11-03 01:37:11,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:37:11" (3/3) ... [2022-11-03 01:37:11,564 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test18_1.i [2022-11-03 01:37:11,582 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:37:11,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-03 01:37:11,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:37:11,642 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d1b0687, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:37:11,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-03 01:37:11,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 30 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:37:11,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 01:37:11,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:11,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:11,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-03 01:37:11,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:11,665 INFO L85 PathProgramCache]: Analyzing trace with hash 882041385, now seen corresponding path program 1 times [2022-11-03 01:37:11,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:37:11,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130370923] [2022-11-03 01:37:11,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:11,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:37:11,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:37:11,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:37:11,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 01:37:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:11,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:37:11,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:11,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:11,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:37:11,971 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:37:11,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130370923] [2022-11-03 01:37:11,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130370923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:11,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:11,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:37:11,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770176005] [2022-11-03 01:37:11,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:11,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:37:11,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:37:12,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:37:12,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:37:12,014 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 30 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:37:12,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:12,174 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2022-11-03 01:37:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:37:12,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-03 01:37:12,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:12,186 INFO L225 Difference]: With dead ends: 63 [2022-11-03 01:37:12,186 INFO L226 Difference]: Without dead ends: 59 [2022-11-03 01:37:12,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:37:12,204 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 27 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:12,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 131 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:37:12,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-03 01:37:12,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 36. [2022-11-03 01:37:12,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.5) internal successors, (36), 31 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:37:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-11-03 01:37:12,256 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 11 [2022-11-03 01:37:12,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:12,257 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-11-03 01:37:12,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:37:12,257 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-11-03 01:37:12,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 01:37:12,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:12,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:12,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:37:12,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:37:12,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-03 01:37:12,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:12,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1769545066, now seen corresponding path program 1 times [2022-11-03 01:37:12,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:37:12,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603155381] [2022-11-03 01:37:12,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:12,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:37:12,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:37:12,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:37:12,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 01:37:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:12,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:37:12,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:12,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:12,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:37:12,608 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:37:12,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603155381] [2022-11-03 01:37:12,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603155381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:12,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:12,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:37:12,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980143504] [2022-11-03 01:37:12,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:12,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:37:12,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:37:12,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:37:12,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:37:12,612 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:37:12,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:12,758 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2022-11-03 01:37:12,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:37:12,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-03 01:37:12,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:12,762 INFO L225 Difference]: With dead ends: 57 [2022-11-03 01:37:12,762 INFO L226 Difference]: Without dead ends: 55 [2022-11-03 01:37:12,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:37:12,763 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 21 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:12,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 123 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:37:12,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-03 01:37:12,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2022-11-03 01:37:12,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 38 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 01:37:12,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2022-11-03 01:37:12,774 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 11 [2022-11-03 01:37:12,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:12,774 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2022-11-03 01:37:12,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:37:12,775 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2022-11-03 01:37:12,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:37:12,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:12,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:12,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:37:12,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:37:12,991 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-03 01:37:12,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:12,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1533786013, now seen corresponding path program 1 times [2022-11-03 01:37:12,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:37:12,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247497740] [2022-11-03 01:37:12,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:12,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:37:12,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:37:12,994 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:37:12,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 01:37:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:13,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:37:13,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:13,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:37:13,150 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:37:13,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247497740] [2022-11-03 01:37:13,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247497740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:13,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:13,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:37:13,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035379554] [2022-11-03 01:37:13,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:13,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:37:13,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:37:13,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:37:13,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:37:13,153 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:37:13,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:13,214 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2022-11-03 01:37:13,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:37:13,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-03 01:37:13,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:13,217 INFO L225 Difference]: With dead ends: 75 [2022-11-03 01:37:13,217 INFO L226 Difference]: Without dead ends: 75 [2022-11-03 01:37:13,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:37:13,218 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 70 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:13,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 55 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:37:13,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-03 01:37:13,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 46. [2022-11-03 01:37:13,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 40 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 01:37:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2022-11-03 01:37:13,233 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 13 [2022-11-03 01:37:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:13,234 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2022-11-03 01:37:13,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:37:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2022-11-03 01:37:13,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 01:37:13,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:13,237 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:13,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:37:13,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:37:13,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-03 01:37:13,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:13,449 INFO L85 PathProgramCache]: Analyzing trace with hash 447225726, now seen corresponding path program 1 times [2022-11-03 01:37:13,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:37:13,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788407788] [2022-11-03 01:37:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:13,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:37:13,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:37:13,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:37:13,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 01:37:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:13,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:37:13,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:13,567 INFO L390 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 7 [2022-11-03 01:37:13,778 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 01:37:13,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-03 01:37:13,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:13,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:37:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:16,087 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:37:16,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788407788] [2022-11-03 01:37:16,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788407788] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:37:16,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1895342266] [2022-11-03 01:37:16,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:16,089 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:37:16,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:37:16,100 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:37:16,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-03 01:37:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:16,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:37:16,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:16,311 INFO L390 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 7 [2022-11-03 01:37:18,416 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 01:37:18,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 01:37:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:18,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:37:20,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:20,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1895342266] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:37:20,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957783409] [2022-11-03 01:37:20,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:20,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:37:20,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:37:20,680 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:37:20,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 01:37:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:20,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:37:20,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:20,756 INFO L390 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 7 [2022-11-03 01:37:20,859 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 01:37:20,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-03 01:37:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:20,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:37:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:21,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957783409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:37:21,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 01:37:21,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6, 5, 6, 5] total 8 [2022-11-03 01:37:21,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123144023] [2022-11-03 01:37:21,123 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 01:37:21,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:37:21,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:37:21,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:37:21,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=53, Unknown=1, NotChecked=0, Total=72 [2022-11-03 01:37:21,125 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:37:23,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:23,404 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2022-11-03 01:37:23,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:37:23,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 18 [2022-11-03 01:37:23,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:23,409 INFO L225 Difference]: With dead ends: 69 [2022-11-03 01:37:23,409 INFO L226 Difference]: Without dead ends: 69 [2022-11-03 01:37:23,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 85 SyntacticMatches, 10 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=24, Invalid=65, Unknown=1, NotChecked=0, Total=90 [2022-11-03 01:37:23,411 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:23,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 123 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 25 Unchecked, 0.2s Time] [2022-11-03 01:37:23,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-03 01:37:23,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 64. [2022-11-03 01:37:23,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 55 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-03 01:37:23,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2022-11-03 01:37:23,421 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 18 [2022-11-03 01:37:23,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:23,422 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2022-11-03 01:37:23,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:37:23,423 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2022-11-03 01:37:23,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 01:37:23,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:23,424 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:23,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:37:23,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:37:23,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:37:24,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:37:24,032 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-03 01:37:24,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:24,033 INFO L85 PathProgramCache]: Analyzing trace with hash 447225727, now seen corresponding path program 1 times [2022-11-03 01:37:24,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:37:24,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832452016] [2022-11-03 01:37:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:24,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:37:24,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:37:24,037 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:37:24,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 01:37:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:24,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:37:24,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:24,145 INFO L390 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 [2022-11-03 01:37:24,152 INFO L390 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 7 [2022-11-03 01:37:24,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:37:24,433 INFO L390 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 12 treesize of output 14 [2022-11-03 01:37:24,450 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 01:37:24,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-03 01:37:24,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:24,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:37:25,096 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:37:25,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832452016] [2022-11-03 01:37:25,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832452016] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:37:25,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1989390957] [2022-11-03 01:37:25,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:25,097 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:37:25,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:37:25,099 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:37:25,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-03 01:37:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:25,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:37:25,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:25,253 INFO L390 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 [2022-11-03 01:37:25,264 INFO L390 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 7 [2022-11-03 01:37:25,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:37:25,412 INFO L390 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 12 treesize of output 14 [2022-11-03 01:37:25,429 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 01:37:25,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-03 01:37:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:25,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:37:26,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1989390957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:37:26,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809536658] [2022-11-03 01:37:26,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:26,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:37:26,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:37:26,660 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:37:26,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 01:37:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:26,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:37:26,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:26,747 INFO L390 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 [2022-11-03 01:37:26,763 INFO L390 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 7 [2022-11-03 01:37:26,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:37:26,965 INFO L390 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 12 treesize of output 14 [2022-11-03 01:37:26,978 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 01:37:26,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-03 01:37:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:27,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:37:27,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809536658] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:37:27,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:37:27,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-11-03 01:37:27,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899880895] [2022-11-03 01:37:27,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:37:27,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:37:27,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:37:27,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:37:27,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:37:27,411 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:37:27,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:27,940 INFO L93 Difference]: Finished difference Result 113 states and 136 transitions. [2022-11-03 01:37:27,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:37:27,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-03 01:37:27,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:27,942 INFO L225 Difference]: With dead ends: 113 [2022-11-03 01:37:27,943 INFO L226 Difference]: Without dead ends: 113 [2022-11-03 01:37:27,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:37:27,944 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 63 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:27,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 317 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 221 Invalid, 0 Unknown, 35 Unchecked, 0.4s Time] [2022-11-03 01:37:27,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-03 01:37:27,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 68. [2022-11-03 01:37:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 58 states have internal predecessors, (74), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-03 01:37:27,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 89 transitions. [2022-11-03 01:37:27,955 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 89 transitions. Word has length 18 [2022-11-03 01:37:27,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:27,956 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 89 transitions. [2022-11-03 01:37:27,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:37:27,956 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 89 transitions. [2022-11-03 01:37:27,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 01:37:27,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:27,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:27,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-03 01:37:28,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-03 01:37:28,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-03 01:37:28,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:37:28,561 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-03 01:37:28,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:28,561 INFO L85 PathProgramCache]: Analyzing trace with hash -58332899, now seen corresponding path program 1 times [2022-11-03 01:37:28,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:37:28,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767287605] [2022-11-03 01:37:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:28,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:37:28,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:37:28,566 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:37:28,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 01:37:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:28,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:37:28,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:28,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:37:28,673 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:37:28,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767287605] [2022-11-03 01:37:28,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767287605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:28,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:28,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:37:28,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328157368] [2022-11-03 01:37:28,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:28,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:37:28,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:37:28,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:37:28,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:37:28,680 INFO L87 Difference]: Start difference. First operand 68 states and 89 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:37:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:28,738 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2022-11-03 01:37:28,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:37:28,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-03 01:37:28,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:28,739 INFO L225 Difference]: With dead ends: 48 [2022-11-03 01:37:28,739 INFO L226 Difference]: Without dead ends: 44 [2022-11-03 01:37:28,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:37:28,740 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:28,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:37:28,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-03 01:37:28,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2022-11-03 01:37:28,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 36 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:37:28,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-11-03 01:37:28,745 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 18 [2022-11-03 01:37:28,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:28,745 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-11-03 01:37:28,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:37:28,746 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-11-03 01:37:28,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 01:37:28,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:28,746 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:28,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 01:37:28,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:37:28,951 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-03 01:37:28,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:28,951 INFO L85 PathProgramCache]: Analyzing trace with hash 287141738, now seen corresponding path program 1 times [2022-11-03 01:37:28,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:37:28,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714807440] [2022-11-03 01:37:28,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:28,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:37:28,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:37:28,953 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:37:28,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 01:37:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:29,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:37:29,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:29,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:37:29,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:37:29,057 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:37:29,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714807440] [2022-11-03 01:37:29,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714807440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:29,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:29,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:37:29,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946766382] [2022-11-03 01:37:29,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:29,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:37:29,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:37:29,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:37:29,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:37:29,060 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:37:29,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:29,116 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2022-11-03 01:37:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:37:29,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-11-03 01:37:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:29,117 INFO L225 Difference]: With dead ends: 73 [2022-11-03 01:37:29,117 INFO L226 Difference]: Without dead ends: 73 [2022-11-03 01:37:29,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:37:29,118 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 21 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:29,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 174 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:37:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-03 01:37:29,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 48. [2022-11-03 01:37:29,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 40 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-03 01:37:29,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2022-11-03 01:37:29,124 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 20 [2022-11-03 01:37:29,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:29,125 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2022-11-03 01:37:29,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:37:29,125 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2022-11-03 01:37:29,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 01:37:29,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:29,126 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:29,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 01:37:29,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:37:29,338 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-03 01:37:29,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:29,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2029952073, now seen corresponding path program 1 times [2022-11-03 01:37:29,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:37:29,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874643433] [2022-11-03 01:37:29,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:29,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:37:29,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:37:29,340 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:37:29,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 01:37:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:29,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:37:29,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:37:29,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:37:29,426 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:37:29,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874643433] [2022-11-03 01:37:29,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874643433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:29,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:29,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:37:29,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921916482] [2022-11-03 01:37:29,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:29,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:37:29,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:37:29,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:37:29,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:37:29,436 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:37:29,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:29,527 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2022-11-03 01:37:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:37:29,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-11-03 01:37:29,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:29,529 INFO L225 Difference]: With dead ends: 54 [2022-11-03 01:37:29,530 INFO L226 Difference]: Without dead ends: 54 [2022-11-03 01:37:29,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:37:29,531 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 9 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:29,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 82 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:37:29,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-03 01:37:29,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2022-11-03 01:37:29,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 42 states have internal predecessors, (50), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-03 01:37:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2022-11-03 01:37:29,536 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 20 [2022-11-03 01:37:29,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:29,537 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2022-11-03 01:37:29,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:37:29,537 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2022-11-03 01:37:29,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:37:29,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:29,538 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:29,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-11-03 01:37:29,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:37:29,750 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-03 01:37:29,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:29,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1495996631, now seen corresponding path program 1 times [2022-11-03 01:37:29,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:37:29,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613358158] [2022-11-03 01:37:29,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:29,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:37:29,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:37:29,753 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:37:29,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 01:37:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:37:29,818 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 01:37:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:37:29,866 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-03 01:37:29,866 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 01:37:29,867 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2022-11-03 01:37:29,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2022-11-03 01:37:29,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2022-11-03 01:37:29,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2022-11-03 01:37:29,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2022-11-03 01:37:29,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (2 of 8 remaining) [2022-11-03 01:37:29,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (1 of 8 remaining) [2022-11-03 01:37:29,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (0 of 8 remaining) [2022-11-03 01:37:29,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 01:37:30,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:37:30,074 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:30,077 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:37:30,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:37:30 BoogieIcfgContainer [2022-11-03 01:37:30,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:37:30,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:37:30,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:37:30,098 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:37:30,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:37:11" (3/4) ... [2022-11-03 01:37:30,102 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 01:37:30,102 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:37:30,103 INFO L158 Benchmark]: Toolchain (without parser) took 19974.23ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 45.0MB in the beginning and 70.7MB in the end (delta: -25.7MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2022-11-03 01:37:30,103 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 54.5MB. Free memory was 34.2MB in the beginning and 34.1MB in the end (delta: 43.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:37:30,103 INFO L158 Benchmark]: CACSL2BoogieTranslator took 806.90ms. Allocated memory is still 71.3MB. Free memory was 44.8MB in the beginning and 51.5MB in the end (delta: -6.7MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2022-11-03 01:37:30,104 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.29ms. Allocated memory is still 71.3MB. Free memory was 51.5MB in the beginning and 49.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:37:30,104 INFO L158 Benchmark]: Boogie Preprocessor took 31.76ms. Allocated memory is still 71.3MB. Free memory was 49.4MB in the beginning and 47.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:37:30,104 INFO L158 Benchmark]: RCFGBuilder took 534.30ms. Allocated memory is still 71.3MB. Free memory was 47.7MB in the beginning and 33.6MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 01:37:30,105 INFO L158 Benchmark]: TraceAbstraction took 18539.70ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 33.0MB in the beginning and 70.7MB in the end (delta: -37.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:37:30,105 INFO L158 Benchmark]: Witness Printer took 4.12ms. Allocated memory is still 104.9MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:37:30,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 54.5MB. Free memory was 34.2MB in the beginning and 34.1MB in the end (delta: 43.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 806.90ms. Allocated memory is still 71.3MB. Free memory was 44.8MB in the beginning and 51.5MB in the end (delta: -6.7MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.29ms. Allocated memory is still 71.3MB. Free memory was 51.5MB in the beginning and 49.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.76ms. Allocated memory is still 71.3MB. Free memory was 49.4MB in the beginning and 47.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 534.30ms. Allocated memory is still 71.3MB. Free memory was 47.7MB in the beginning and 33.6MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 18539.70ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 33.0MB in the beginning and 70.7MB in the end (delta: -37.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.12ms. Allocated memory is still 104.9MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 778]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 778. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={1:0}] [L779] CALL entry_point() [L761] int len = 10; VAL [ldv_global_msg_list={1:0}, len=10] [L762] CALL, EXPR ldv_malloc(sizeof(struct A18*)*len) VAL [\old(size)=40, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L762] RET, EXPR ldv_malloc(sizeof(struct A18*)*len) VAL [ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct A18*)*len)={2:0}, len=10] [L762] struct A18 **array = (struct A18 **)ldv_malloc(sizeof(struct A18*)*len); [L763] struct A18 *p; [L764] int i=0; [L765] int j; VAL [array={2:0}, i=0, ldv_global_msg_list={1:0}, len=10] [L766] COND FALSE !(!array) VAL [array={2:0}, i=0, ldv_global_msg_list={1:0}, len=10] [L767] COND TRUE i=0) VAL [array={2:0}, i=0, j=4294967295, ldv_global_msg_list={1:0}, len=10, p={0:0}] [L779] RET entry_point() - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 18.5s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 239 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 231 mSDsluCounter, 1141 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 60 IncrementalHoareTripleChecker+Unchecked, 813 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 446 IncrementalHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 328 mSDtfsCounter, 446 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 14 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=5, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 144 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 240 ConstructedInterpolants, 24 QuantifiedInterpolants, 1452 SizeOfPredicates, 17 NumberOfNonLiveVariables, 673 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 27/48 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 01:37:30,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f9b8d6-0c0b-483a-a82d-4b82eef190c4/bin/utaipan-7li7fVZpFI/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: UNKNOWN: Overapproximated counterexample