./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_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_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/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_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/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_64922efb-56f5-4ca6-bef4-f920f73617e3/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 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:10:02,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:10:02,799 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:10:02,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:10:02,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:10:02,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:10:02,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:10:02,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:10:02,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:10:02,839 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:10:02,840 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:10:02,840 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:10:02,841 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:10:02,842 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:10:02,842 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:10:02,843 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:10:02,844 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:10:02,844 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:10:02,845 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:10:02,845 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:10:02,846 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:10:02,847 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:10:02,848 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:10:02,848 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:10:02,849 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:10:02,849 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:10:02,850 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:10:02,850 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:10:02,851 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:10:02,852 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:10:02,852 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:10:02,853 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:10:02,853 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:10:02,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:10:02,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:10:02,855 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:10:02,855 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:10:02,856 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:10:02,856 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:10:02,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:10:02,857 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:10:02,857 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:10:02,858 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:10:02,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:10:02,859 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_64922efb-56f5-4ca6-bef4-f920f73617e3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a [2023-11-25 00:10:03,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:10:03,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:10:03,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:10:03,150 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:10:03,151 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:10:03,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2023-11-25 00:10:06,388 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:10:07,010 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:10:07,011 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2023-11-25 00:10:07,066 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/data/20f938b2b/4378ba80100849f9bd5eb55c34253302/FLAG19bbc2d06 [2023-11-25 00:10:07,087 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/data/20f938b2b/4378ba80100849f9bd5eb55c34253302 [2023-11-25 00:10:07,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:10:07,094 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:10:07,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:07,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:10:07,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:10:07,103 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:07" (1/1) ... [2023-11-25 00:10:07,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee59f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:07, skipping insertion in model container [2023-11-25 00:10:07,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:07" (1/1) ... [2023-11-25 00:10:07,254 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:10:07,534 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_64922efb-56f5-4ca6-bef4-f920f73617e3/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4498,4511] [2023-11-25 00:10:07,544 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_64922efb-56f5-4ca6-bef4-f920f73617e3/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4558,4571] [2023-11-25 00:10:08,719 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:08,725 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:08,727 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:08,733 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:08,734 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:08,760 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:08,761 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:08,763 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:08,764 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:08,768 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:08,769 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:08,770 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:08,771 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:09,270 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:10:09,274 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:10:09,276 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:10:09,278 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:10:09,288 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:10:09,290 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:10:09,291 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:10:09,292 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:10:09,298 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:10:09,300 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:10:09,543 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:09,568 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:09,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:09,724 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:10:09,753 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_64922efb-56f5-4ca6-bef4-f920f73617e3/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4498,4511] [2023-11-25 00:10:09,754 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_64922efb-56f5-4ca6-bef4-f920f73617e3/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4558,4571] [2023-11-25 00:10:09,833 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:09,838 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:09,839 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:09,839 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:09,840 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:09,850 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:09,851 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:09,852 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:09,853 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:09,854 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:09,855 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:09,856 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:09,857 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:09,923 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:10:09,927 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:10:09,930 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:10:09,931 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:10:09,936 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:10:09,936 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:10:09,937 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:10:09,938 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:10:09,939 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:10:09,946 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:10:10,010 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:10,025 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:10,034 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7770-7781] [2023-11-25 00:10:10,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:10,374 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:10,374 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:10,375 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:10,376 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:10,376 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:10,376 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:10,377 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:10,377 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:10,377 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:10,378 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:10,378 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:10,378 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:10,378 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:10,378 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:10,378 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:10,387 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:10:10,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:10 WrapperNode [2023-11-25 00:10:10,388 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:10,390 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:10:10,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:10:10,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:10:10,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:10" (1/1) ... [2023-11-25 00:10:10,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:10" (1/1) ... [2023-11-25 00:10:10,672 INFO L138 Inliner]: procedures = 690, calls = 1682, calls flagged for inlining = 53, calls inlined = 14, statements flattened = 898 [2023-11-25 00:10:10,673 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:10:10,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:10:10,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:10:10,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:10:10,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:10" (1/1) ... [2023-11-25 00:10:10,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:10" (1/1) ... [2023-11-25 00:10:10,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:10" (1/1) ... [2023-11-25 00:10:10,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:10" (1/1) ... [2023-11-25 00:10:10,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:10" (1/1) ... [2023-11-25 00:10:10,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:10" (1/1) ... [2023-11-25 00:10:10,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:10" (1/1) ... [2023-11-25 00:10:10,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:10" (1/1) ... [2023-11-25 00:10:10,850 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:10:10,858 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:10:10,858 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:10:10,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:10:10,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:10" (1/1) ... [2023-11-25 00:10:10,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:10:10,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:10,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:10:10,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:10:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:10:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-25 00:10:10,943 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-25 00:10:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-25 00:10:10,944 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-25 00:10:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-25 00:10:10,945 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-25 00:10:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-25 00:10:10,945 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-25 00:10:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:10:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-25 00:10:10,946 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-25 00:10:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:10:10,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:10:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:10:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:10:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:10:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-25 00:10:10,948 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-25 00:10:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:10:10,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:10:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-25 00:10:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-25 00:10:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-25 00:10:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-25 00:10:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-25 00:10:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-25 00:10:10,950 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-25 00:10:10,950 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-25 00:10:10,950 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-25 00:10:10,951 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-25 00:10:10,951 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-25 00:10:10,952 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-25 00:10:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:10:10,952 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:10:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-25 00:10:10,952 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-25 00:10:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-25 00:10:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-25 00:10:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:10:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-25 00:10:10,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-25 00:10:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:10:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:10:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-25 00:10:10,954 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-25 00:10:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-25 00:10:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-25 00:10:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-25 00:10:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-25 00:10:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:10:10,956 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-25 00:10:10,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-25 00:10:10,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:10:11,312 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:10:11,315 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:10:12,486 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:10:12,798 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:10:12,798 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-25 00:10:12,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:10:12 BoogieIcfgContainer [2023-11-25 00:10:12,801 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:10:12,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:10:12,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:10:12,811 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:10:12,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:10:07" (1/3) ... [2023-11-25 00:10:12,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566153b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:10:12, skipping insertion in model container [2023-11-25 00:10:12,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:10" (2/3) ... [2023-11-25 00:10:12,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566153b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:10:12, skipping insertion in model container [2023-11-25 00:10:12,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:10:12" (3/3) ... [2023-11-25 00:10:12,817 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_push_back_harness.i [2023-11-25 00:10:12,840 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:10:12,841 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:10:12,932 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:10:12,946 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;@7183182a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:10:12,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:10:12,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 256 states, 132 states have (on average 1.196969696969697) internal successors, (158), 133 states have internal predecessors, (158), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-25 00:10:12,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-25 00:10:12,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:12,977 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:12,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:10:12,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:12,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1659027803, now seen corresponding path program 1 times [2023-11-25 00:10:13,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:13,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559612026] [2023-11-25 00:10:13,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:13,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-25 00:10:14,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:14,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559612026] [2023-11-25 00:10:14,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559612026] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:10:14,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973332767] [2023-11-25 00:10:14,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:14,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:14,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:14,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:10:14,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:10:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:14,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 2217 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-25 00:10:14,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:15,052 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-25 00:10:15,055 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:10:15,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973332767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:15,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:10:15,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-25 00:10:15,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587316721] [2023-11-25 00:10:15,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:15,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:10:15,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:15,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:10:15,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:10:15,112 INFO L87 Difference]: Start difference. First operand has 256 states, 132 states have (on average 1.196969696969697) internal successors, (158), 133 states have internal predecessors, (158), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-25 00:10:15,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:15,800 INFO L93 Difference]: Finished difference Result 491 states and 736 transitions. [2023-11-25 00:10:15,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:10:15,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 99 [2023-11-25 00:10:15,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:15,836 INFO L225 Difference]: With dead ends: 491 [2023-11-25 00:10:15,837 INFO L226 Difference]: Without dead ends: 256 [2023-11-25 00:10:15,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:10:15,849 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 89 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:15,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1032 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-25 00:10:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-25 00:10:15,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2023-11-25 00:10:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 134 states have internal predecessors, (157), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (119), 100 states have call predecessors, (119), 100 states have call successors, (119) [2023-11-25 00:10:15,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 377 transitions. [2023-11-25 00:10:15,980 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 377 transitions. Word has length 99 [2023-11-25 00:10:15,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:15,981 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 377 transitions. [2023-11-25 00:10:15,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-25 00:10:15,982 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 377 transitions. [2023-11-25 00:10:15,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-25 00:10:15,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:15,988 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 3, 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] [2023-11-25 00:10:16,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:16,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:16,201 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:10:16,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:16,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1967542903, now seen corresponding path program 1 times [2023-11-25 00:10:16,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:16,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331315357] [2023-11-25 00:10:16,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:16,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:16,348 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:10:16,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180335982] [2023-11-25 00:10:16,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:16,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:16,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:16,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:10:16,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:10:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:17,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:10:17,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-25 00:10:17,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:10:17,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:17,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331315357] [2023-11-25 00:10:17,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:10:17,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180335982] [2023-11-25 00:10:17,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180335982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:17,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:17,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:10:17,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620057367] [2023-11-25 00:10:17,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:17,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:10:17,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:17,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:10:17,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:10:17,234 INFO L87 Difference]: Start difference. First operand 256 states and 377 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-25 00:10:18,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:18,133 INFO L93 Difference]: Finished difference Result 471 states and 693 transitions. [2023-11-25 00:10:18,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:10:18,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 117 [2023-11-25 00:10:18,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:18,140 INFO L225 Difference]: With dead ends: 471 [2023-11-25 00:10:18,140 INFO L226 Difference]: Without dead ends: 256 [2023-11-25 00:10:18,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:10:18,145 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 141 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:18,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1238 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-25 00:10:18,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-25 00:10:18,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2023-11-25 00:10:18,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 134 states have internal predecessors, (157), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (116), 100 states have call predecessors, (116), 100 states have call successors, (116) [2023-11-25 00:10:18,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 374 transitions. [2023-11-25 00:10:18,202 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 374 transitions. Word has length 117 [2023-11-25 00:10:18,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:18,206 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 374 transitions. [2023-11-25 00:10:18,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-25 00:10:18,207 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 374 transitions. [2023-11-25 00:10:18,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-25 00:10:18,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:18,224 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 00:10:18,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:18,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-25 00:10:18,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:10:18,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:18,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2054079808, now seen corresponding path program 2 times [2023-11-25 00:10:18,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:18,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101875211] [2023-11-25 00:10:18,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:18,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:18,585 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:10:18,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34817408] [2023-11-25 00:10:18,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-25 00:10:18,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:18,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:18,591 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:10:18,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:10:19,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-25 00:10:19,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:10:19,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 1835 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-25 00:10:19,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-25 00:10:19,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:10:19,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:19,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101875211] [2023-11-25 00:10:19,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:10:19,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34817408] [2023-11-25 00:10:19,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34817408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:19,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:19,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:10:19,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379939450] [2023-11-25 00:10:19,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:19,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:10:19,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:19,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:10:19,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:10:19,461 INFO L87 Difference]: Start difference. First operand 256 states and 374 transitions. Second operand has 5 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-25 00:10:20,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:20,186 INFO L93 Difference]: Finished difference Result 467 states and 684 transitions. [2023-11-25 00:10:20,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:10:20,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 126 [2023-11-25 00:10:20,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:20,192 INFO L225 Difference]: With dead ends: 467 [2023-11-25 00:10:20,192 INFO L226 Difference]: Without dead ends: 256 [2023-11-25 00:10:20,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:10:20,195 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 0 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:20,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1193 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-25 00:10:20,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-25 00:10:20,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2023-11-25 00:10:20,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 134 states have internal predecessors, (157), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (115), 100 states have call predecessors, (115), 100 states have call successors, (115) [2023-11-25 00:10:20,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 373 transitions. [2023-11-25 00:10:20,231 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 373 transitions. Word has length 126 [2023-11-25 00:10:20,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:20,232 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 373 transitions. [2023-11-25 00:10:20,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-25 00:10:20,233 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 373 transitions. [2023-11-25 00:10:20,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-25 00:10:20,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:20,235 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:20,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:20,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:20,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:10:20,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:20,447 INFO L85 PathProgramCache]: Analyzing trace with hash 919070899, now seen corresponding path program 3 times [2023-11-25 00:10:20,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:20,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078467943] [2023-11-25 00:10:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:20,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:20,589 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:10:20,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020660495] [2023-11-25 00:10:20,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-25 00:10:20,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:20,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:20,607 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:10:20,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-25 00:10:21,344 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-25 00:10:21,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:10:21,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 2745 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-25 00:10:21,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:21,467 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-25 00:10:21,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:10:21,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:21,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078467943] [2023-11-25 00:10:21,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:10:21,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020660495] [2023-11-25 00:10:21,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020660495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:21,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:21,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-25 00:10:21,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066077762] [2023-11-25 00:10:21,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:21,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-25 00:10:21,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:21,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-25 00:10:21,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:10:21,471 INFO L87 Difference]: Start difference. First operand 256 states and 373 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-25 00:10:22,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:22,337 INFO L93 Difference]: Finished difference Result 476 states and 694 transitions. [2023-11-25 00:10:22,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:10:22,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 135 [2023-11-25 00:10:22,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:22,341 INFO L225 Difference]: With dead ends: 476 [2023-11-25 00:10:22,342 INFO L226 Difference]: Without dead ends: 266 [2023-11-25 00:10:22,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:10:22,344 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 144 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:22,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1823 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-25 00:10:22,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-25 00:10:22,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2023-11-25 00:10:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 136 states have (on average 1.1838235294117647) internal successors, (161), 138 states have internal predecessors, (161), 106 states have call successors, (106), 22 states have call predecessors, (106), 23 states have return successors, (120), 105 states have call predecessors, (120), 105 states have call successors, (120) [2023-11-25 00:10:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 387 transitions. [2023-11-25 00:10:22,370 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 387 transitions. Word has length 135 [2023-11-25 00:10:22,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:22,371 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 387 transitions. [2023-11-25 00:10:22,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-25 00:10:22,371 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 387 transitions. [2023-11-25 00:10:22,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-25 00:10:22,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:22,374 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:22,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:22,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:22,590 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:10:22,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:22,590 INFO L85 PathProgramCache]: Analyzing trace with hash 893938870, now seen corresponding path program 1 times [2023-11-25 00:10:22,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:22,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022345308] [2023-11-25 00:10:22,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:22,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:22,707 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:10:22,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842418743] [2023-11-25 00:10:22,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:22,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:22,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:22,709 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:10:22,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64922efb-56f5-4ca6-bef4-f920f73617e3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-25 00:10:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:23,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 2877 conjuncts, 75 conjunts are in the unsatisfiable core [2023-11-25 00:10:23,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:24,216 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 120 proven. 28 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-25 00:10:24,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-25 00:10:24,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:24,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022345308] [2023-11-25 00:10:24,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:10:24,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842418743] [2023-11-25 00:10:24,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842418743] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:24,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2142769036] [2023-11-25 00:10:24,954 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2023-11-25 00:10:24,955 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:10:24,961 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:10:24,967 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:10:24,967 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs