./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6f838ff631dd7d907eee223e4bc065b6ce71a3dd1969d0a88cef9ccdcf3b54d1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:05:27,971 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:05:28,090 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:05:28,100 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:05:28,101 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:05:28,170 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:05:28,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:05:28,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:05:28,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:05:28,177 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:05:28,178 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:05:28,179 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:05:28,179 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:05:28,181 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:05:28,182 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:05:28,182 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:05:28,182 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:05:28,183 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:05:28,183 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:05:28,184 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:05:28,184 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:05:28,185 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:05:28,186 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:05:28,186 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:05:28,187 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:05:28,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:05:28,188 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:05:28,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:05:28,188 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:05:28,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:05:28,190 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:05:28,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:05:28,198 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:05:28,199 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:05:28,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:05:28,199 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:05:28,200 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:05:28,200 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:05:28,200 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:05:28,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:05:28,201 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:05:28,201 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:05:28,202 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:05:28,202 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:05:28,202 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f838ff631dd7d907eee223e4bc065b6ce71a3dd1969d0a88cef9ccdcf3b54d1 [2023-11-25 00:05:28,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:05:28,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:05:28,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:05:28,590 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:05:28,591 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:05:28,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i [2023-11-25 00:05:31,707 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:05:32,343 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:05:32,345 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i [2023-11-25 00:05:32,389 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/data/0842dba5a/0c1d025189e04e009bfcd3cddc106fd2/FLAG3b61d81d4 [2023-11-25 00:05:32,405 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/data/0842dba5a/0c1d025189e04e009bfcd3cddc106fd2 [2023-11-25 00:05:32,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:05:32,411 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:05:32,415 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:32,415 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:05:32,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:05:32,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:32" (1/1) ... [2023-11-25 00:05:32,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31097659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:32, skipping insertion in model container [2023-11-25 00:05:32,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:32" (1/1) ... [2023-11-25 00:05:32,553 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:05:32,825 WARN L240 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_7509f846-3183-4a78-8410-ddd34c5232bf/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i[4493,4506] [2023-11-25 00:05:32,833 WARN L240 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_7509f846-3183-4a78-8410-ddd34c5232bf/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i[4553,4566] [2023-11-25 00:05:33,982 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:33,983 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:33,984 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:33,985 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:33,986 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:34,009 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:34,011 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:34,014 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:34,015 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:34,017 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:34,023 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:34,024 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:34,025 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:34,522 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:05:34,524 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:05:34,525 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:05:34,527 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:05:34,528 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:05:34,529 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:05:34,530 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:05:34,531 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:05:34,532 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:05:34,533 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:05:34,812 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:34,820 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:34,826 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:34,833 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:34,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:05:34,957 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:05:34,984 WARN L240 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_7509f846-3183-4a78-8410-ddd34c5232bf/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i[4493,4506] [2023-11-25 00:05:34,985 WARN L240 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_7509f846-3183-4a78-8410-ddd34c5232bf/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i[4553,4566] [2023-11-25 00:05:35,074 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,074 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,075 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,075 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,076 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,083 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,084 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,085 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,086 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,087 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,087 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,088 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,088 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,123 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:05:35,124 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:05:35,125 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:05:35,126 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:05:35,127 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:05:35,127 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:05:35,128 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:05:35,128 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:05:35,129 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:05:35,129 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:05:35,157 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,157 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,158 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,163 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:35,169 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7775-7786] [2023-11-25 00:05:35,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:05:35,490 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:35,490 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:35,491 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:35,491 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:35,491 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:35,491 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:35,492 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:35,492 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:35,492 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:35,492 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:35,492 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:35,493 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:35,493 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:35,493 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:35,493 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:35,502 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:05:35,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:35 WrapperNode [2023-11-25 00:05:35,503 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:35,504 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:05:35,504 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:05:35,504 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:05:35,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:35" (1/1) ... [2023-11-25 00:05:35,638 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:35" (1/1) ... [2023-11-25 00:05:35,738 INFO L138 Inliner]: procedures = 690, calls = 1683, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 655 [2023-11-25 00:05:35,751 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:05:35,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:05:35,752 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:05:35,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:05:35,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:35" (1/1) ... [2023-11-25 00:05:35,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:35" (1/1) ... [2023-11-25 00:05:35,780 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:35" (1/1) ... [2023-11-25 00:05:35,781 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:35" (1/1) ... [2023-11-25 00:05:35,830 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:35" (1/1) ... [2023-11-25 00:05:35,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:35" (1/1) ... [2023-11-25 00:05:35,841 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:35" (1/1) ... [2023-11-25 00:05:35,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:35" (1/1) ... [2023-11-25 00:05:35,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:05:35,857 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:05:35,857 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:05:35,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:05:35,858 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:35" (1/1) ... [2023-11-25 00:05:35,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:05:35,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:35,892 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:05:35,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:05:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:05:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-25 00:05:35,956 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-25 00:05:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-25 00:05:35,956 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-25 00:05:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-25 00:05:35,957 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-25 00:05:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:05:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-25 00:05:35,957 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-25 00:05:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:05:35,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:05:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:05:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:05:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:05:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-25 00:05:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-25 00:05:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:05:35,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:05:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-25 00:05:35,960 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-25 00:05:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-25 00:05:35,960 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-25 00:05:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-25 00:05:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-25 00:05:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:05:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:05:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-25 00:05:35,962 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-25 00:05:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:05:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:05:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:05:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-25 00:05:35,962 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-25 00:05:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-25 00:05:35,963 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-25 00:05:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-25 00:05:35,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-25 00:05:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:05:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-25 00:05:35,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-25 00:05:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:05:36,299 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:05:36,302 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:05:37,291 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:05:37,487 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:05:37,488 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:05:37,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:37 BoogieIcfgContainer [2023-11-25 00:05:37,489 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:05:37,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:05:37,492 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:05:37,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:05:37,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:05:32" (1/3) ... [2023-11-25 00:05:37,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b58c95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:05:37, skipping insertion in model container [2023-11-25 00:05:37,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:35" (2/3) ... [2023-11-25 00:05:37,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b58c95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:05:37, skipping insertion in model container [2023-11-25 00:05:37,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:37" (3/3) ... [2023-11-25 00:05:37,497 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_harness.i [2023-11-25 00:05:37,516 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:05:37,516 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:05:37,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:05:37,575 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@4fe3cea6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:05:37,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:05:37,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 74 states have internal predecessors, (83), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-25 00:05:37,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-25 00:05:37,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:37,591 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 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, 1, 1] [2023-11-25 00:05:37,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:37,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:37,597 INFO L85 PathProgramCache]: Analyzing trace with hash -486571369, now seen corresponding path program 1 times [2023-11-25 00:05:37,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:37,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145658132] [2023-11-25 00:05:37,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:37,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-25 00:05:38,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:38,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145658132] [2023-11-25 00:05:38,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145658132] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:05:38,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677936712] [2023-11-25 00:05:38,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:38,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:38,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:38,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:38,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:05:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:39,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 1981 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-25 00:05:39,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-25 00:05:39,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:39,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677936712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:39,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:05:39,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-25 00:05:39,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705220564] [2023-11-25 00:05:39,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:39,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:05:39,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:39,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:05:39,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:05:39,270 INFO L87 Difference]: Start difference. First operand has 151 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 74 states have internal predecessors, (83), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-25 00:05:40,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:40,051 INFO L93 Difference]: Finished difference Result 273 states and 398 transitions. [2023-11-25 00:05:40,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:05:40,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 54 [2023-11-25 00:05:40,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:40,066 INFO L225 Difference]: With dead ends: 273 [2023-11-25 00:05:40,066 INFO L226 Difference]: Without dead ends: 151 [2023-11-25 00:05:40,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:05:40,075 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 31 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:40,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 596 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-25 00:05:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-25 00:05:40,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-25 00:05:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 75 states have internal predecessors, (82), 61 states have call successors, (61), 15 states have call predecessors, (61), 16 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2023-11-25 00:05:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 211 transitions. [2023-11-25 00:05:40,147 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 211 transitions. Word has length 54 [2023-11-25 00:05:40,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:40,148 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 211 transitions. [2023-11-25 00:05:40,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-25 00:05:40,149 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 211 transitions. [2023-11-25 00:05:40,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-25 00:05:40,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:40,153 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:40,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:40,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-25 00:05:40,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:40,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:40,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1428396306, now seen corresponding path program 1 times [2023-11-25 00:05:40,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:40,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097010481] [2023-11-25 00:05:40,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:40,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:40,490 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:05:40,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36590896] [2023-11-25 00:05:40,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:40,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:40,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:40,492 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:40,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:05:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:41,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 2113 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:05:41,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:41,240 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-25 00:05:41,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:41,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:41,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097010481] [2023-11-25 00:05:41,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:05:41,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36590896] [2023-11-25 00:05:41,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36590896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:41,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:41,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-25 00:05:41,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588658699] [2023-11-25 00:05:41,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:41,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:05:41,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:41,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:05:41,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:05:41,244 INFO L87 Difference]: Start difference. First operand 151 states and 211 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-25 00:05:41,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:41,870 INFO L93 Difference]: Finished difference Result 278 states and 397 transitions. [2023-11-25 00:05:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-25 00:05:41,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 63 [2023-11-25 00:05:41,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:41,875 INFO L225 Difference]: With dead ends: 278 [2023-11-25 00:05:41,875 INFO L226 Difference]: Without dead ends: 161 [2023-11-25 00:05:41,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:05:41,878 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 36 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:41,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 907 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:05:41,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-25 00:05:41,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-25 00:05:41,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 79 states have internal predecessors, (86), 66 states have call successors, (66), 16 states have call predecessors, (66), 17 states have return successors, (73), 65 states have call predecessors, (73), 65 states have call successors, (73) [2023-11-25 00:05:41,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 225 transitions. [2023-11-25 00:05:41,904 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 225 transitions. Word has length 63 [2023-11-25 00:05:41,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:41,905 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 225 transitions. [2023-11-25 00:05:41,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-25 00:05:41,906 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 225 transitions. [2023-11-25 00:05:41,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-25 00:05:41,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:41,908 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2023-11-25 00:05:41,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:42,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:42,117 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:42,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:42,118 INFO L85 PathProgramCache]: Analyzing trace with hash -296258164, now seen corresponding path program 1 times [2023-11-25 00:05:42,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:42,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96446655] [2023-11-25 00:05:42,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:42,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:42,270 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:05:42,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096705454] [2023-11-25 00:05:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:42,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:42,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:42,274 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:42,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7509f846-3183-4a78-8410-ddd34c5232bf/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:05:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:43,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 2377 conjuncts, 238 conjunts are in the unsatisfiable core [2023-11-25 00:05:43,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:43,284 INFO L378 Elim1Store]: Elim1 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 [2023-11-25 00:05:44,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-25 00:05:44,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-25 00:05:44,580 INFO L349 Elim1Store]: treesize reduction 100, result has 28.1 percent of original size [2023-11-25 00:05:44,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 60 treesize of output 77 [2023-11-25 00:05:44,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-25 00:05:44,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-25 00:05:56,356 INFO L349 Elim1Store]: treesize reduction 138, result has 35.2 percent of original size [2023-11-25 00:05:56,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 89 treesize of output 172 [2023-11-25 00:05:56,454 INFO L349 Elim1Store]: treesize reduction 38, result has 11.6 percent of original size [2023-11-25 00:05:56,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 86 [2023-11-25 00:05:59,784 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:05:59,902 INFO L349 Elim1Store]: treesize reduction 93, result has 19.1 percent of original size [2023-11-25 00:05:59,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 41 treesize of output 38 [2023-11-25 00:06:00,099 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-11-25 00:06:00,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2023-11-25 00:06:00,152 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:06:00,186 INFO L349 Elim1Store]: treesize reduction 145, result has 0.7 percent of original size [2023-11-25 00:06:00,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 41 treesize of output 1 [2023-11-25 00:06:00,411 INFO L349 Elim1Store]: treesize reduction 92, result has 1.1 percent of original size [2023-11-25 00:06:00,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 43 treesize of output 1 [2023-11-25 00:06:01,650 INFO L349 Elim1Store]: treesize reduction 588, result has 16.2 percent of original size [2023-11-25 00:06:01,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 161 treesize of output 378