./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f57bc64edf303a057c8eafb48480d4e5b764bd411481261d53eb2a101eb82ae8 --- 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-dbf71c6-m [2022-10-17 10:42:58,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:42:58,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:42:58,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:42:58,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:42:58,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:42:58,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:42:58,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:42:58,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:42:58,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:42:58,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:42:58,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:42:58,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:42:58,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:42:58,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:42:58,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:42:58,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:42:58,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:42:58,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:42:58,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:42:58,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:42:58,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:42:58,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:42:58,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:42:58,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:42:58,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:42:58,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:42:58,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:42:58,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:42:58,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:42:58,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:42:58,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:42:58,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:42:58,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:42:58,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:42:58,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:42:58,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:42:58,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:42:58,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:42:58,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:42:58,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:42:58,416 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:42:58,462 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:42:58,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:42:58,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:42:58,466 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:42:58,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:42:58,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:42:58,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:42:58,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:42:58,469 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:42:58,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:42:58,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:42:58,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:42:58,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:42:58,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:42:58,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:42:58,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:42:58,472 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:42:58,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:42:58,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:42:58,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:42:58,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:42:58,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:42:58,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:42:58,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:42:58,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:42:58,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:42:58,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:42:58,476 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:42:58,477 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:42:58,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:42:58,477 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_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f57bc64edf303a057c8eafb48480d4e5b764bd411481261d53eb2a101eb82ae8 [2022-10-17 10:42:58,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:42:58,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:42:58,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:42:58,792 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:42:58,793 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:42:58,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i [2022-10-17 10:42:58,871 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/data/01126275d/5018494099d3438e8807a7f6fdd8c4a5/FLAG4e58fe67c [2022-10-17 10:42:59,597 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:42:59,598 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i [2022-10-17 10:42:59,653 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/data/01126275d/5018494099d3438e8807a7f6fdd8c4a5/FLAG4e58fe67c [2022-10-17 10:42:59,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/data/01126275d/5018494099d3438e8807a7f6fdd8c4a5 [2022-10-17 10:42:59,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:42:59,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:42:59,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:42:59,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:42:59,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:42:59,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:42:59" (1/1) ... [2022-10-17 10:42:59,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576b61a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:59, skipping insertion in model container [2022-10-17 10:42:59,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:42:59" (1/1) ... [2022-10-17 10:42:59,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:42:59,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:43:00,079 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4494,4507] [2022-10-17 10:43:00,085 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4554,4567] [2022-10-17 10:43:00,919 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:00,920 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:00,921 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:00,922 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:00,923 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:00,944 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:00,944 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:00,947 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:00,947 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:00,949 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:00,951 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:00,951 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:00,952 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:01,303 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 10:43:01,305 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 10:43:01,306 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 10:43:01,307 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 10:43:01,309 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 10:43:01,310 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 10:43:01,311 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 10:43:01,311 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 10:43:01,312 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 10:43:01,313 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 10:43:01,482 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 10:43:01,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:43:01,552 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:43:01,584 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4494,4507] [2022-10-17 10:43:01,585 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4554,4567] [2022-10-17 10:43:01,639 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:01,640 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:01,640 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:01,641 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:01,641 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:01,651 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:01,652 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:01,653 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:01,654 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:01,655 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:01,656 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:01,656 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:01,657 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:43:01,719 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 10:43:01,720 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 10:43:01,721 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 10:43:01,722 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 10:43:01,723 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 10:43:01,724 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 10:43:01,724 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 10:43:01,725 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 10:43:01,726 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 10:43:01,726 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 10:43:01,775 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 10:43:01,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:43:02,175 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:43:02,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:02 WrapperNode [2022-10-17 10:43:02,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:43:02,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:43:02,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:43:02,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:43:02,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:02" (1/1) ... [2022-10-17 10:43:02,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:02" (1/1) ... [2022-10-17 10:43:02,354 INFO L138 Inliner]: procedures = 679, calls = 1045, calls flagged for inlining = 50, calls inlined = 5, statements flattened = 134 [2022-10-17 10:43:02,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:43:02,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:43:02,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:43:02,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:43:02,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:02" (1/1) ... [2022-10-17 10:43:02,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:02" (1/1) ... [2022-10-17 10:43:02,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:02" (1/1) ... [2022-10-17 10:43:02,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:02" (1/1) ... [2022-10-17 10:43:02,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:02" (1/1) ... [2022-10-17 10:43:02,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:02" (1/1) ... [2022-10-17 10:43:02,396 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:02" (1/1) ... [2022-10-17 10:43:02,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:02" (1/1) ... [2022-10-17 10:43:02,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:43:02,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:43:02,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:43:02,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:43:02,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:02" (1/1) ... [2022-10-17 10:43:02,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:43:02,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:43:02,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:43:02,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:43:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_back [2022-10-17 10:43:02,529 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_back [2022-10-17 10:43:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:43:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:43:02,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:43:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-10-17 10:43:02,530 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-10-17 10:43:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:43:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-10-17 10:43:02,530 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-10-17 10:43:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:43:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:43:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:43:02,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:43:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2022-10-17 10:43:02,531 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2022-10-17 10:43:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:43:02,531 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:43:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:43:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:43:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:43:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-10-17 10:43:02,532 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-10-17 10:43:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2022-10-17 10:43:02,532 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2022-10-17 10:43:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:43:02,872 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:43:02,874 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:43:03,241 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:43:03,251 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:43:03,254 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 10:43:03,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:43:03 BoogieIcfgContainer [2022-10-17 10:43:03,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:43:03,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:43:03,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:43:03,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:43:03,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:42:59" (1/3) ... [2022-10-17 10:43:03,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735a9651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:43:03, skipping insertion in model container [2022-10-17 10:43:03,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:02" (2/3) ... [2022-10-17 10:43:03,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735a9651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:43:03, skipping insertion in model container [2022-10-17 10:43:03,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:43:03" (3/3) ... [2022-10-17 10:43:03,271 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_back_harness.i [2022-10-17 10:43:03,294 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:43:03,294 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:43:03,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:43:03,363 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3581a7e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:43:03,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:43:03,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 64 states have (on average 1.296875) internal successors, (83), 65 states have internal predecessors, (83), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-10-17 10:43:03,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-10-17 10:43:03,380 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:03,381 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:03,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:03,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:03,387 INFO L85 PathProgramCache]: Analyzing trace with hash 464723229, now seen corresponding path program 1 times [2022-10-17 10:43:03,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:03,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136153432] [2022-10-17 10:43:03,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:03,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:03,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:43:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:03,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:43:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:03,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-17 10:43:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:03,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:43:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:03,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:43:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:03,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:43:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:03,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-17 10:43:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:03,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-17 10:43:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:03,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:43:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:03,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:43:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:03,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-17 10:43:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-10-17 10:43:03,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:03,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136153432] [2022-10-17 10:43:04,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136153432] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:04,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:04,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:43:04,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588617351] [2022-10-17 10:43:04,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:04,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:43:04,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:04,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:43:04,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:43:04,041 INFO L87 Difference]: Start difference. First operand has 98 states, 64 states have (on average 1.296875) internal successors, (83), 65 states have internal predecessors, (83), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-17 10:43:04,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:43:04,078 INFO L93 Difference]: Finished difference Result 188 states and 271 transitions. [2022-10-17 10:43:04,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:43:04,080 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2022-10-17 10:43:04,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:43:04,090 INFO L225 Difference]: With dead ends: 188 [2022-10-17 10:43:04,090 INFO L226 Difference]: Without dead ends: 93 [2022-10-17 10:43:04,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:43:04,109 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:43:04,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:43:04,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-10-17 10:43:04,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-10-17 10:43:04,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.25) internal successors, (75), 61 states have internal predecessors, (75), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-10-17 10:43:04,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 122 transitions. [2022-10-17 10:43:04,177 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 122 transitions. Word has length 84 [2022-10-17 10:43:04,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:43:04,178 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 122 transitions. [2022-10-17 10:43:04,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-17 10:43:04,178 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 122 transitions. [2022-10-17 10:43:04,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-10-17 10:43:04,186 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:04,187 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:04,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:43:04,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:04,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:04,188 INFO L85 PathProgramCache]: Analyzing trace with hash 463621205, now seen corresponding path program 1 times [2022-10-17 10:43:04,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:04,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194436339] [2022-10-17 10:43:04,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:04,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:04,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:43:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:04,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:43:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:04,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-17 10:43:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:04,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:43:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:04,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:43:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:04,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:43:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:04,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-17 10:43:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:04,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-17 10:43:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:04,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:43:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:04,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:43:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:04,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-17 10:43:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:04,839 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-10-17 10:43:04,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:04,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194436339] [2022-10-17 10:43:04,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194436339] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:43:04,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009162920] [2022-10-17 10:43:04,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:04,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:43:04,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:43:04,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:43:04,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:43:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:05,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 62 conjunts are in the unsatisfiable core [2022-10-17 10:43:05,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:43:05,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-10-17 10:43:05,257 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-10-17 10:43:05,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:43:05,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:43:05,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-10-17 10:43:05,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:43:05,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:43:05,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-10-17 10:43:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-10-17 10:43:06,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:43:06,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009162920] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:06,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:43:06,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2022-10-17 10:43:06,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192704212] [2022-10-17 10:43:06,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:06,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:43:06,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:06,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:43:06,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:43:06,665 INFO L87 Difference]: Start difference. First operand 93 states and 122 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2022-10-17 10:43:06,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:43:06,859 INFO L93 Difference]: Finished difference Result 201 states and 273 transitions. [2022-10-17 10:43:06,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:43:06,861 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 84 [2022-10-17 10:43:06,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:43:06,870 INFO L225 Difference]: With dead ends: 201 [2022-10-17 10:43:06,870 INFO L226 Difference]: Without dead ends: 142 [2022-10-17 10:43:06,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 85 SyntacticMatches, 12 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:43:06,873 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 35 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:43:06,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 539 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 76 Unchecked, 0.1s Time] [2022-10-17 10:43:06,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-10-17 10:43:06,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 131. [2022-10-17 10:43:06,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 85 states have (on average 1.2588235294117647) internal successors, (107), 88 states have internal predecessors, (107), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (35), 30 states have call predecessors, (35), 32 states have call successors, (35) [2022-10-17 10:43:06,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 175 transitions. [2022-10-17 10:43:06,918 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 175 transitions. Word has length 84 [2022-10-17 10:43:06,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:43:06,924 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 175 transitions. [2022-10-17 10:43:06,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2022-10-17 10:43:06,927 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 175 transitions. [2022-10-17 10:43:06,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-10-17 10:43:06,930 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:06,930 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:06,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:43:07,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:43:07,159 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:07,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:07,159 INFO L85 PathProgramCache]: Analyzing trace with hash -345725421, now seen corresponding path program 1 times [2022-10-17 10:43:07,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:07,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126090431] [2022-10-17 10:43:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:07,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:07,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:43:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:07,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:43:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-17 10:43:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:43:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:07,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:43:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:07,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:43:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:07,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-17 10:43:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:07,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-17 10:43:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:07,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:43:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:07,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:43:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:07,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-17 10:43:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-10-17 10:43:07,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:07,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126090431] [2022-10-17 10:43:07,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126090431] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:43:07,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020047847] [2022-10-17 10:43:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:07,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:43:07,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:43:07,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:43:07,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2064d481-3102-443b-9944-6bf6b22b09aa/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:43:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:07,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 40 conjunts are in the unsatisfiable core [2022-10-17 10:43:07,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:43:07,987 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 10:43:07,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-10-17 10:43:08,001 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 10:43:08,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-10-17 10:43:10,230 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((v_aws_linked_list_back_~list.offset_BEFORE_CALL_6 Int) (v_aws_linked_list_back_~list.base_BEFORE_CALL_6 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_6) (+ v_aws_linked_list_back_~list.offset_BEFORE_CALL_6 24)) 0))) (exists ((v_aws_linked_list_back_~list.offset_BEFORE_CALL_6 Int) (v_aws_linked_list_back_~list.base_BEFORE_CALL_6 Int)) (not (= (select (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_6) (+ v_aws_linked_list_back_~list.offset_BEFORE_CALL_6 24)) 0)))) is different from true [2022-10-17 10:43:12,316 WARN L855 $PredicateComparison]: unable to prove that (and (or (exists ((v_aws_linked_list_back_~list.offset_BEFORE_CALL_6 Int) (v_aws_linked_list_back_~list.base_BEFORE_CALL_6 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_6) (+ v_aws_linked_list_back_~list.offset_BEFORE_CALL_6 24)) 0))) (exists ((v_aws_linked_list_back_~list.offset_BEFORE_CALL_6 Int) (v_aws_linked_list_back_~list.base_BEFORE_CALL_6 Int)) (not (= (select (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_6) (+ v_aws_linked_list_back_~list.offset_BEFORE_CALL_6 24)) 0)))) (let ((.cse0 (+ c_aws_linked_list_back_~list.offset 24))) (or (not (= (select (select |c_#memory_$Pointer$.base| c_aws_linked_list_back_~list.base) .cse0) 0)) (not (= (select (select |c_#memory_$Pointer$.offset| c_aws_linked_list_back_~list.base) .cse0) 0))))) is different from true [2022-10-17 10:43:14,354 WARN L855 $PredicateComparison]: unable to prove that (and (or (exists ((v_aws_linked_list_back_~list.offset_BEFORE_CALL_6 Int) (v_aws_linked_list_back_~list.base_BEFORE_CALL_6 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_6) (+ v_aws_linked_list_back_~list.offset_BEFORE_CALL_6 24)) 0))) (exists ((v_aws_linked_list_back_~list.offset_BEFORE_CALL_6 Int) (v_aws_linked_list_back_~list.base_BEFORE_CALL_6 Int)) (not (= (select (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_6) (+ v_aws_linked_list_back_~list.offset_BEFORE_CALL_6 24)) 0)))) (or (exists ((v_aws_linked_list_back_~list.offset_BEFORE_CALL_7 Int) (v_aws_linked_list_back_~list.base_BEFORE_CALL_7 Int)) (not (= (select (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_7) (+ v_aws_linked_list_back_~list.offset_BEFORE_CALL_7 24)) 0))) (exists ((v_aws_linked_list_back_~list.offset_BEFORE_CALL_7 Int) (v_aws_linked_list_back_~list.base_BEFORE_CALL_7 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_7) (+ v_aws_linked_list_back_~list.offset_BEFORE_CALL_7 24)) 0))))) is different from true [2022-10-17 10:43:16,602 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((v_aws_linked_list_back_~list.offset_BEFORE_CALL_8 Int) (v_aws_linked_list_back_~list.base_BEFORE_CALL_8 Int)) (not (= (select (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_8) (+ v_aws_linked_list_back_~list.offset_BEFORE_CALL_8 24)) 0))) (exists ((v_aws_linked_list_back_~list.offset_BEFORE_CALL_8 Int) (v_aws_linked_list_back_~list.base_BEFORE_CALL_8 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_8) (+ v_aws_linked_list_back_~list.offset_BEFORE_CALL_8 24)) 0)))) is different from true [2022-10-17 10:43:18,710 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_9 Int) (v_aws_linked_list_back_~list.offset_BEFORE_CALL_9 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_9) (+ v_aws_linked_list_back_~list.offset_BEFORE_CALL_9 24)) 0))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_9 Int) (v_aws_linked_list_back_~list.offset_BEFORE_CALL_9 Int)) (not (= (select (select |c_#memory_$Pointer$.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_9) (+ v_aws_linked_list_back_~list.offset_BEFORE_CALL_9 24)) 0)))) is different from true [2022-10-17 10:43:26,802 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-17 10:43:35,008 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)