./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_clear_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_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh --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 602c22a5759f33fe3c7a18e3ef1531ea38defb370e298f7d0c16de4a5734f1a7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:53:31,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:53:31,952 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 16:53:31,956 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:53:31,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:53:31,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:53:31,977 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:53:31,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:53:31,978 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:53:31,979 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:53:31,979 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:53:31,980 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:53:31,980 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:53:31,981 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:53:31,981 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:53:31,982 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:53:31,982 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:53:31,983 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:53:31,983 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:53:31,984 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:53:31,984 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:53:31,985 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:53:31,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:53:31,986 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:53:31,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:53:31,987 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:53:31,988 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:53:31,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:53:31,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:53:31,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:53:31,989 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:53:31,990 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:53:31,990 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:53:31,990 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:53:31,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:53:31,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:53:31,991 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:53:31,991 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:53:31,991 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:53:31,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:53:31,992 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:53:31,992 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:53:31,992 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:53:31,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:53:31,993 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_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 602c22a5759f33fe3c7a18e3ef1531ea38defb370e298f7d0c16de4a5734f1a7 [2023-12-02 16:53:32,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:53:32,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:53:32,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:53:32,212 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:53:32,213 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:53:32,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i [2023-12-02 16:53:35,140 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:53:35,500 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:53:35,501 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i [2023-12-02 16:53:35,533 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/data/2be5ac4be/a3c890a4e8864d73bcab37d8257f22ac/FLAGb77019de2 [2023-12-02 16:53:35,547 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/data/2be5ac4be/a3c890a4e8864d73bcab37d8257f22ac [2023-12-02 16:53:35,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:53:35,551 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:53:35,553 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:53:35,553 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:53:35,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:53:35,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:53:35" (1/1) ... [2023-12-02 16:53:35,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba85832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:53:35, skipping insertion in model container [2023-12-02 16:53:35,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:53:35" (1/1) ... [2023-12-02 16:53:35,671 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:53:35,920 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_8c430990-7306-4031-95b9-9fe12490037a/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i[4494,4507] [2023-12-02 16:53:35,927 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_8c430990-7306-4031-95b9-9fe12490037a/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i[4554,4567] [2023-12-02 16:53:36,741 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:36,742 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:36,742 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:36,743 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:36,744 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:36,754 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:36,754 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:36,755 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:36,756 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:36,758 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:36,759 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:36,760 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:36,760 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,092 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 16:53:37,093 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 16:53:37,094 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 16:53:37,095 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 16:53:37,097 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 16:53:37,098 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 16:53:37,098 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 16:53:37,099 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 16:53:37,100 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 16:53:37,100 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 16:53:37,209 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,216 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:53:37,299 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:53:37,314 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_8c430990-7306-4031-95b9-9fe12490037a/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i[4494,4507] [2023-12-02 16:53:37,314 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_8c430990-7306-4031-95b9-9fe12490037a/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i[4554,4567] [2023-12-02 16:53:37,368 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,368 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,369 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,369 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,370 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,377 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,377 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,378 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,379 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,380 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,381 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,381 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,381 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,415 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 16:53:37,416 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 16:53:37,417 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 16:53:37,418 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 16:53:37,418 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 16:53:37,419 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 16:53:37,419 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 16:53:37,420 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 16:53:37,420 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 16:53:37,421 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 16:53:37,439 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,444 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 16:53:37,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7529-7540] [2023-12-02 16:53:37,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:53:37,665 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:53:37,666 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:53:37,666 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:53:37,666 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:53:37,666 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:53:37,666 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:53:37,666 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:53:37,667 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:53:37,667 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:53:37,667 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:53:37,667 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:53:37,667 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:53:37,667 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:53:37,668 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:53:37,668 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:53:37,675 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:53:37,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:53:37 WrapperNode [2023-12-02 16:53:37,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:53:37,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:53:37,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:53:37,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:53:37,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:53:37" (1/1) ... [2023-12-02 16:53:37,746 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:53:37" (1/1) ... [2023-12-02 16:53:37,802 INFO L138 Inliner]: procedures = 689, calls = 1580, calls flagged for inlining = 46, calls inlined = 6, statements flattened = 586 [2023-12-02 16:53:37,802 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:53:37,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:53:37,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:53:37,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:53:37,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:53:37" (1/1) ... [2023-12-02 16:53:37,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:53:37" (1/1) ... [2023-12-02 16:53:37,818 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:53:37" (1/1) ... [2023-12-02 16:53:37,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:53:37" (1/1) ... [2023-12-02 16:53:37,849 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:53:37" (1/1) ... [2023-12-02 16:53:37,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:53:37" (1/1) ... [2023-12-02 16:53:37,858 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:53:37" (1/1) ... [2023-12-02 16:53:37,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:53:37" (1/1) ... [2023-12-02 16:53:37,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:53:37,872 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:53:37,872 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:53:37,873 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:53:37,873 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:53:37" (1/1) ... [2023-12-02 16:53:37,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:53:37,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:53:37,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:53:37,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:53:37,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 16:53:37,940 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-12-02 16:53:37,940 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-12-02 16:53:37,941 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-12-02 16:53:37,941 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-12-02 16:53:37,941 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-12-02 16:53:37,941 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-12-02 16:53:37,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 16:53:37,941 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-12-02 16:53:37,941 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-12-02 16:53:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 16:53:37,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 16:53:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 16:53:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:53:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 16:53:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:53:37,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:53:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-12-02 16:53:37,943 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-12-02 16:53:37,943 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-12-02 16:53:37,943 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-12-02 16:53:37,943 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 16:53:37,943 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 16:53:37,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 16:53:37,943 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clear [2023-12-02 16:53:37,943 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clear [2023-12-02 16:53:37,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 16:53:37,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 16:53:37,944 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-12-02 16:53:37,944 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-12-02 16:53:37,944 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-12-02 16:53:37,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-12-02 16:53:37,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 16:53:37,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:53:38,177 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:53:38,178 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:53:38,807 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:53:38,975 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:53:38,976 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 16:53:38,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:53:38 BoogieIcfgContainer [2023-12-02 16:53:38,977 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:53:38,980 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:53:38,980 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:53:38,983 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:53:38,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:53:35" (1/3) ... [2023-12-02 16:53:38,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7988078e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:53:38, skipping insertion in model container [2023-12-02 16:53:38,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:53:37" (2/3) ... [2023-12-02 16:53:38,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7988078e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:53:38, skipping insertion in model container [2023-12-02 16:53:38,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:53:38" (3/3) ... [2023-12-02 16:53:38,986 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_clear_harness.i [2023-12-02 16:53:39,003 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:53:39,003 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:53:39,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:53:39,080 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;@520d0a45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:53:39,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:53:39,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 40 states have (on average 1.15) internal successors, (46), 41 states have internal predecessors, (46), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:53:39,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 16:53:39,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:39,096 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:39,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:53:39,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:39,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1933694439, now seen corresponding path program 1 times [2023-12-02 16:53:39,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:39,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821622642] [2023-12-02 16:53:39,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:39,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 16:53:39,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:39,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821622642] [2023-12-02 16:53:39,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821622642] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:53:39,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902346596] [2023-12-02 16:53:39,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:39,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:53:39,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:53:39,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:53:39,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:53:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:40,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 1990 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:53:40,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:53:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 16:53:40,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:53:40,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902346596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:40,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:53:40,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-12-02 16:53:40,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494701231] [2023-12-02 16:53:40,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:40,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:53:40,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:40,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:53:40,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:53:40,473 INFO L87 Difference]: Start difference. First operand has 78 states, 40 states have (on average 1.15) internal successors, (46), 41 states have internal predecessors, (46), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:53:40,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:40,855 INFO L93 Difference]: Finished difference Result 130 states and 170 transitions. [2023-12-02 16:53:40,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:53:40,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 47 [2023-12-02 16:53:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:40,867 INFO L225 Difference]: With dead ends: 130 [2023-12-02 16:53:40,867 INFO L226 Difference]: Without dead ends: 78 [2023-12-02 16:53:40,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:53:40,874 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 17 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:40,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 238 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:53:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-02 16:53:40,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-12-02 16:53:40,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 40 states have (on average 1.125) internal successors, (45), 42 states have internal predecessors, (45), 25 states have call successors, (25), 11 states have call predecessors, (25), 12 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2023-12-02 16:53:40,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2023-12-02 16:53:40,927 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 47 [2023-12-02 16:53:40,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:40,928 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2023-12-02 16:53:40,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:53:40,929 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2023-12-02 16:53:40,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 16:53:40,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:40,933 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-12-02 16:53:40,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:53:41,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 16:53:41,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:53:41,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:41,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1105090247, now seen corresponding path program 1 times [2023-12-02 16:53:41,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:41,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469364059] [2023-12-02 16:53:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:41,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:41,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:53:41,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730607514] [2023-12-02 16:53:41,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:41,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:53:41,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:53:41,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:53:41,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 16:53:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:41,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 2122 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:53:41,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:53:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-02 16:53:41,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:53:41,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:41,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469364059] [2023-12-02 16:53:41,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:53:41,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730607514] [2023-12-02 16:53:41,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730607514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:41,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:53:41,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:53:41,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551569919] [2023-12-02 16:53:41,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:41,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:53:41,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:41,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:53:41,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:53:41,798 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-02 16:53:42,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:42,204 INFO L93 Difference]: Finished difference Result 123 states and 149 transitions. [2023-12-02 16:53:42,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:53:42,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 56 [2023-12-02 16:53:42,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:42,207 INFO L225 Difference]: With dead ends: 123 [2023-12-02 16:53:42,207 INFO L226 Difference]: Without dead ends: 76 [2023-12-02 16:53:42,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:53:42,210 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 21 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:42,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 355 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:53:42,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-02 16:53:42,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-02 16:53:42,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 40 states have internal predecessors, (43), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 16:53:42,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2023-12-02 16:53:42,223 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 56 [2023-12-02 16:53:42,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:42,224 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2023-12-02 16:53:42,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-02 16:53:42,224 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2023-12-02 16:53:42,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 16:53:42,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:42,228 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:42,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 16:53:42,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:53:42,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:53:42,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:42,429 INFO L85 PathProgramCache]: Analyzing trace with hash -274267873, now seen corresponding path program 1 times [2023-12-02 16:53:42,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:42,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864600783] [2023-12-02 16:53:42,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:42,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:42,518 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:53:42,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562073377] [2023-12-02 16:53:42,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:42,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:53:42,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:53:42,521 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:53:42,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c430990-7306-4031-95b9-9fe12490037a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 16:53:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:43,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 2386 conjuncts, 338 conjunts are in the unsatisfiable core [2023-12-02 16:53:43,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:53:43,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:53:44,543 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 16:53:44,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-02 16:53:44,562 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 16:53:44,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-02 16:53:44,581 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-12-02 16:53:44,581 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 4 case distinctions, treesize of input 52 treesize of output 49 [2023-12-02 16:57:11,840 WARN L293 SmtUtils]: Spent 3.40m on a formula simplification. DAG size of input: 304 DAG size of output: 98 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-02 16:57:11,840 INFO L349 Elim1Store]: treesize reduction 847, result has 18.0 percent of original size [2023-12-02 16:57:11,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 58 case distinctions, treesize of input 432 treesize of output 707 [2023-12-02 16:57:11,998 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 16:57:11,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 368 treesize of output 490 [2023-12-02 16:57:12,199 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 16:57:12,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 320 treesize of output 442 [2023-12-02 16:57:12,478 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-12-02 16:57:12,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 6 case distinctions, treesize of input 294 treesize of output 460