./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/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_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/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_b8528b67-45ba-40af-84f4-22affd063054/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 877e83a63a602219ce02028b5212cf6c29aa8f33a031ee39d52c3c671213dc91 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:51:02,853 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:51:02,962 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:51:02,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:51:02,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:51:03,016 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:51:03,017 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:51:03,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:51:03,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:51:03,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:51:03,024 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:51:03,025 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:51:03,026 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:51:03,027 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:51:03,028 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:51:03,028 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:51:03,029 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:51:03,029 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:51:03,029 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:51:03,030 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:51:03,030 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:51:03,031 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:51:03,032 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:51:03,033 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:51:03,033 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:51:03,033 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:51:03,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:51:03,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:51:03,035 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:51:03,035 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:51:03,036 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:51:03,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:51:03,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:51:03,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:51:03,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:51:03,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:51:03,038 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:51:03,038 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:51:03,039 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:51:03,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:51:03,039 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:51:03,040 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:51:03,040 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:51:03,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:51:03,041 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_b8528b67-45ba-40af-84f4-22affd063054/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 877e83a63a602219ce02028b5212cf6c29aa8f33a031ee39d52c3c671213dc91 [2023-11-24 23:51:03,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:51:03,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:51:03,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:51:03,397 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:51:03,398 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:51:03,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i [2023-11-24 23:51:06,461 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:51:06,992 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:51:06,993 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i [2023-11-24 23:51:07,034 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/data/9c45c5175/653ef2a0bd0b475fa933f6fad9288b00/FLAG8f0bc9d3e [2023-11-24 23:51:07,052 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/data/9c45c5175/653ef2a0bd0b475fa933f6fad9288b00 [2023-11-24 23:51:07,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:51:07,060 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:51:07,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:07,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:51:07,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:51:07,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:51:07" (1/1) ... [2023-11-24 23:51:07,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b527d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:07, skipping insertion in model container [2023-11-24 23:51:07,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:51:07" (1/1) ... [2023-11-24 23:51:07,212 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:51:07,479 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_b8528b67-45ba-40af-84f4-22affd063054/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4502,4515] [2023-11-24 23:51:07,487 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_b8528b67-45ba-40af-84f4-22affd063054/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4562,4575] [2023-11-24 23:51:08,660 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:08,661 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:08,662 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:08,662 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:08,664 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:08,679 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:08,680 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:08,682 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:08,683 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:08,685 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:08,686 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:08,687 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:08,688 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,220 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:51:09,222 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:51:09,224 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:51:09,225 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:51:09,227 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:51:09,228 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:51:09,229 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:51:09,229 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:51:09,230 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:51:09,231 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:51:09,430 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,438 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:51:09,535 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:51:09,556 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_b8528b67-45ba-40af-84f4-22affd063054/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4502,4515] [2023-11-24 23:51:09,560 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_b8528b67-45ba-40af-84f4-22affd063054/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4562,4575] [2023-11-24 23:51:09,666 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,676 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,677 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,678 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,679 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,693 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,694 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,696 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,696 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,697 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,698 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,698 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,699 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,759 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:51:09,761 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:51:09,764 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:51:09,764 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:51:09,765 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:51:09,766 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:51:09,767 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:51:09,770 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:51:09,771 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:51:09,772 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:51:09,812 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,817 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:09,835 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7747-7758] [2023-11-24 23:51:09,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:51:10,153 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:10,153 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:10,154 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:10,155 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:10,155 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:10,155 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:10,156 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:10,156 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:10,156 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:10,156 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:10,156 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:10,157 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:10,157 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:10,157 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:10,157 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:10,163 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:51:10,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:10 WrapperNode [2023-11-24 23:51:10,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:10,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:51:10,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:51:10,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:51:10,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:10" (1/1) ... [2023-11-24 23:51:10,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:10" (1/1) ... [2023-11-24 23:51:10,450 INFO L138 Inliner]: procedures = 689, calls = 1716, calls flagged for inlining = 51, calls inlined = 7, statements flattened = 680 [2023-11-24 23:51:10,451 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:51:10,451 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:51:10,451 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:51:10,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:51:10,468 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:10" (1/1) ... [2023-11-24 23:51:10,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:10" (1/1) ... [2023-11-24 23:51:10,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:10" (1/1) ... [2023-11-24 23:51:10,500 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:10" (1/1) ... [2023-11-24 23:51:10,573 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:10" (1/1) ... [2023-11-24 23:51:10,577 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:10" (1/1) ... [2023-11-24 23:51:10,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:10" (1/1) ... [2023-11-24 23:51:10,592 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:10" (1/1) ... [2023-11-24 23:51:10,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:51:10,605 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:51:10,605 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:51:10,605 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:51:10,606 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:10" (1/1) ... [2023-11-24 23:51:10,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:51:10,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:10,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:51:10,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:51:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:51:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-24 23:51:10,707 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-24 23:51:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-24 23:51:10,708 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-24 23:51:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-24 23:51:10,709 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-24 23:51:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:51:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-24 23:51:10,710 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-24 23:51:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:51:10,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:51:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:51:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:51:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-24 23:51:10,711 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-24 23:51:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:51:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:51:10,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:51:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-24 23:51:10,712 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-24 23:51:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-24 23:51:10,713 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-24 23:51:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-24 23:51:10,713 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-24 23:51:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:51:10,714 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:51:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:51:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:51:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:51:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-24 23:51:10,715 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-24 23:51:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-24 23:51:10,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-24 23:51:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:51:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2023-11-24 23:51:10,716 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2023-11-24 23:51:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-24 23:51:10,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-24 23:51:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:51:11,062 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:51:11,065 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:51:12,646 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:51:12,860 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:51:12,860 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:51:12,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:51:12 BoogieIcfgContainer [2023-11-24 23:51:12,863 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:51:12,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:51:12,867 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:51:12,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:51:12,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:51:07" (1/3) ... [2023-11-24 23:51:12,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542071e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:51:12, skipping insertion in model container [2023-11-24 23:51:12,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:10" (2/3) ... [2023-11-24 23:51:12,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542071e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:51:12, skipping insertion in model container [2023-11-24 23:51:12,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:51:12" (3/3) ... [2023-11-24 23:51:12,878 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_contents_harness.i [2023-11-24 23:51:12,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:51:12,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:51:13,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:51:13,039 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;@1dc4eb00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:51:13,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:51:13,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 69 states have (on average 1.144927536231884) internal successors, (79), 70 states have internal predecessors, (79), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-24 23:51:13,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-24 23:51:13,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:13,075 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 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, 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] [2023-11-24 23:51:13,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:13,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:13,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1853835229, now seen corresponding path program 1 times [2023-11-24 23:51:13,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:13,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147687583] [2023-11-24 23:51:13,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:13,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-24 23:51:14,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:14,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147687583] [2023-11-24 23:51:14,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147687583] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:14,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212818132] [2023-11-24 23:51:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:14,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:14,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:14,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:14,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:51:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:15,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:51:15,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-24 23:51:15,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:15,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212818132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:15,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:51:15,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-24 23:51:15,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305289440] [2023-11-24 23:51:15,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:15,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:51:15,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:15,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:51:15,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:51:15,780 INFO L87 Difference]: Start difference. First operand has 137 states, 69 states have (on average 1.144927536231884) internal successors, (79), 70 states have internal predecessors, (79), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-24 23:51:16,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:16,581 INFO L93 Difference]: Finished difference Result 270 states and 378 transitions. [2023-11-24 23:51:16,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:51:16,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 133 [2023-11-24 23:51:16,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:16,602 INFO L225 Difference]: With dead ends: 270 [2023-11-24 23:51:16,602 INFO L226 Difference]: Without dead ends: 137 [2023-11-24 23:51:16,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:51:16,620 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 24 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:16,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 550 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:51:16,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-24 23:51:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-24 23:51:16,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (57), 51 states have call predecessors, (57), 51 states have call successors, (57) [2023-11-24 23:51:16,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 187 transitions. [2023-11-24 23:51:16,746 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 187 transitions. Word has length 133 [2023-11-24 23:51:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:16,748 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 187 transitions. [2023-11-24 23:51:16,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-24 23:51:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 187 transitions. [2023-11-24 23:51:16,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-24 23:51:16,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:16,758 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 4, 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, 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] [2023-11-24 23:51:16,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:16,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 23:51:16,977 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:16,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:16,977 INFO L85 PathProgramCache]: Analyzing trace with hash 228995868, now seen corresponding path program 1 times [2023-11-24 23:51:16,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:16,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970025381] [2023-11-24 23:51:16,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:16,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:17,145 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:51:17,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43101623] [2023-11-24 23:51:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:17,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:17,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:17,147 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:17,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:51:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:18,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:51:18,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:18,128 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-11-24 23:51:18,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:18,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:18,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970025381] [2023-11-24 23:51:18,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:51:18,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43101623] [2023-11-24 23:51:18,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43101623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:18,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:18,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:51:18,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627706506] [2023-11-24 23:51:18,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:18,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:51:18,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:18,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:51:18,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:51:18,134 INFO L87 Difference]: Start difference. First operand 137 states and 187 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-24 23:51:19,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:19,382 INFO L93 Difference]: Finished difference Result 236 states and 323 transitions. [2023-11-24 23:51:19,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:51:19,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 142 [2023-11-24 23:51:19,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:19,387 INFO L225 Difference]: With dead ends: 236 [2023-11-24 23:51:19,387 INFO L226 Difference]: Without dead ends: 137 [2023-11-24 23:51:19,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:51:19,390 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 22 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:19,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 547 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 23:51:19,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-24 23:51:19,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-24 23:51:19,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (55), 51 states have call predecessors, (55), 51 states have call successors, (55) [2023-11-24 23:51:19,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 185 transitions. [2023-11-24 23:51:19,413 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 185 transitions. Word has length 142 [2023-11-24 23:51:19,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:19,414 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 185 transitions. [2023-11-24 23:51:19,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-24 23:51:19,415 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 185 transitions. [2023-11-24 23:51:19,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 23:51:19,418 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:19,419 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2023-11-24 23:51:19,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-24 23:51:19,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:19,630 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:19,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:19,631 INFO L85 PathProgramCache]: Analyzing trace with hash 591346013, now seen corresponding path program 2 times [2023-11-24 23:51:19,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:19,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19344464] [2023-11-24 23:51:19,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:19,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:19,839 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:51:19,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974683001] [2023-11-24 23:51:19,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:51:19,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:19,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:19,845 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:19,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:51:20,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 23:51:20,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:51:20,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:51:20,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2023-11-24 23:51:20,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:20,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:20,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19344464] [2023-11-24 23:51:20,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:51:20,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974683001] [2023-11-24 23:51:20,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974683001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:20,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:20,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:51:20,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213462578] [2023-11-24 23:51:20,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:20,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:51:20,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:20,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:51:20,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:51:20,898 INFO L87 Difference]: Start difference. First operand 137 states and 185 transitions. Second operand has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-24 23:51:22,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:22,422 INFO L93 Difference]: Finished difference Result 201 states and 268 transitions. [2023-11-24 23:51:22,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:51:22,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 151 [2023-11-24 23:51:22,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:22,427 INFO L225 Difference]: With dead ends: 201 [2023-11-24 23:51:22,427 INFO L226 Difference]: Without dead ends: 137 [2023-11-24 23:51:22,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:51:22,429 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:22,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 575 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-24 23:51:22,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-24 23:51:22,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-24 23:51:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (54), 51 states have call predecessors, (54), 51 states have call successors, (54) [2023-11-24 23:51:22,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2023-11-24 23:51:22,454 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 151 [2023-11-24 23:51:22,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:22,456 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2023-11-24 23:51:22,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-24 23:51:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2023-11-24 23:51:22,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-24 23:51:22,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:22,488 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2023-11-24 23:51:22,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:22,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:22,707 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:22,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:22,708 INFO L85 PathProgramCache]: Analyzing trace with hash -115835450, now seen corresponding path program 3 times [2023-11-24 23:51:22,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:22,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843860127] [2023-11-24 23:51:22,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:22,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:22,895 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:51:22,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817923044] [2023-11-24 23:51:22,895 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:51:22,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:22,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:22,897 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:22,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:51:23,791 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:51:23,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:51:23,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:51:23,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-24 23:51:23,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:23,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:23,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843860127] [2023-11-24 23:51:23,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:51:23,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817923044] [2023-11-24 23:51:23,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817923044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:23,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:23,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:51:23,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515789302] [2023-11-24 23:51:23,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:23,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:51:23,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:23,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:51:23,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:51:23,936 INFO L87 Difference]: Start difference. First operand 137 states and 184 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-24 23:51:27,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:51:28,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:28,098 INFO L93 Difference]: Finished difference Result 206 states and 273 transitions. [2023-11-24 23:51:28,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:51:28,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 160 [2023-11-24 23:51:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:28,103 INFO L225 Difference]: With dead ends: 206 [2023-11-24 23:51:28,103 INFO L226 Difference]: Without dead ends: 137 [2023-11-24 23:51:28,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:51:28,105 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 18 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:28,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 676 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 142 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-11-24 23:51:28,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-24 23:51:28,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-24 23:51:28,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2023-11-24 23:51:28,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 182 transitions. [2023-11-24 23:51:28,129 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 182 transitions. Word has length 160 [2023-11-24 23:51:28,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:28,131 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 182 transitions. [2023-11-24 23:51:28,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-24 23:51:28,131 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 182 transitions. [2023-11-24 23:51:28,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-24 23:51:28,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:28,135 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2023-11-24 23:51:28,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:28,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:28,349 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:28,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:28,350 INFO L85 PathProgramCache]: Analyzing trace with hash 234495996, now seen corresponding path program 1 times [2023-11-24 23:51:28,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:28,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815080154] [2023-11-24 23:51:28,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:28,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:28,559 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:51:28,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576624610] [2023-11-24 23:51:28,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:28,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:28,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:28,561 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:28,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8528b67-45ba-40af-84f4-22affd063054/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:51:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:44,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 3220 conjuncts, 479 conjunts are in the unsatisfiable core [2023-11-24 23:51:44,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:44,257 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-24 23:51:44,258 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 1 case distinctions, treesize of input 9 treesize of output 11 [2023-11-24 23:51:45,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:51:45,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2023-11-24 23:51:46,936 INFO L349 Elim1Store]: treesize reduction 122, result has 30.3 percent of original size [2023-11-24 23:51:46,936 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 12 case distinctions, treesize of input 98 treesize of output 159 [2023-11-24 23:51:46,995 INFO L349 Elim1Store]: treesize reduction 38, result has 11.6 percent of original size [2023-11-24 23:51:46,996 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 92 treesize of output 110 [2023-11-24 23:51:49,110 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2023-11-24 23:51:49,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 17 [2023-11-24 23:51:49,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-24 23:51:49,942 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:51:49,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 643 treesize of output 895 [2023-11-24 23:51:50,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 366 [2023-11-24 23:51:53,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-24 23:51:53,240 INFO L349 Elim1Store]: treesize reduction 100, result has 28.1 percent of original size [2023-11-24 23:51:53,240 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 [2023-11-24 23:51:53,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13