./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.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_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/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_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/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_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/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 40c03b884ddbc3cb1e032cd6f8f52748216dc2b56f8e56ff0fe620c91f6aac52 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:46:52,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:46:52,066 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 13:46:52,071 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:46:52,072 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:46:52,095 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:46:52,096 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:46:52,097 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:46:52,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:46:52,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:46:52,098 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:46:52,099 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:46:52,099 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:46:52,100 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:46:52,100 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:46:52,101 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:46:52,101 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:46:52,102 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:46:52,102 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:46:52,103 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:46:52,103 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:46:52,104 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:46:52,105 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:46:52,105 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:46:52,105 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:46:52,106 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:46:52,106 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:46:52,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:46:52,107 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:46:52,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:46:52,107 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:46:52,108 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:46:52,108 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:46:52,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:46:52,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:46:52,109 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:46:52,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:46:52,109 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:46:52,109 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:46:52,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:46:52,110 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:46:52,110 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:46:52,110 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:46:52,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:46:52,111 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_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40c03b884ddbc3cb1e032cd6f8f52748216dc2b56f8e56ff0fe620c91f6aac52 [2023-12-02 13:46:52,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:46:52,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:46:52,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:46:52,356 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:46:52,356 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:46:52,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i [2023-12-02 13:46:55,145 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:46:55,509 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:46:55,510 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i [2023-12-02 13:46:55,539 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/data/43b9b410e/5c74990b57cb47588de7e27ff5d4ae49/FLAGdec0624d2 [2023-12-02 13:46:55,553 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/data/43b9b410e/5c74990b57cb47588de7e27ff5d4ae49 [2023-12-02 13:46:55,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:46:55,558 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:46:55,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:46:55,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:46:55,564 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:46:55,565 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:46:55" (1/1) ... [2023-12-02 13:46:55,566 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5216ec01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:46:55, skipping insertion in model container [2023-12-02 13:46:55,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:46:55" (1/1) ... [2023-12-02 13:46:55,682 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:46:55,928 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_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i[4493,4506] [2023-12-02 13:46:55,934 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_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i[4553,4566] [2023-12-02 13:46:56,664 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:56,665 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:56,666 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:56,666 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:56,668 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:56,683 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:56,684 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:56,686 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:56,687 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:56,689 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:56,690 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:56,691 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:56,692 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,131 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 13:46:57,133 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 13:46:57,134 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 13:46:57,136 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 13:46:57,138 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 13:46:57,138 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 13:46:57,139 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 13:46:57,140 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 13:46:57,141 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 13:46:57,142 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 13:46:57,295 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,295 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,301 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,309 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:46:57,404 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:46:57,420 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_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i[4493,4506] [2023-12-02 13:46:57,420 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_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i[4553,4566] [2023-12-02 13:46:57,483 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,484 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,484 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,485 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,486 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,494 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,495 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,496 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,498 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,500 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,501 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,501 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,502 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,570 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 13:46:57,571 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 13:46:57,572 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 13:46:57,573 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 13:46:57,575 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 13:46:57,575 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 13:46:57,576 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 13:46:57,577 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 13:46:57,578 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 13:46:57,579 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 13:46:57,620 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,621 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,622 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,629 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:46:57,636 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7743-7754] [2023-12-02 13:46:57,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:46:57,878 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:46:57,878 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:46:57,878 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:46:57,878 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:46:57,878 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:46:57,878 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:46:57,878 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:46:57,879 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:46:57,879 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:46:57,879 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:46:57,879 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:46:57,879 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:46:57,879 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:46:57,879 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:46:57,879 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:46:57,887 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:46:57,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:46:57 WrapperNode [2023-12-02 13:46:57,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:46:57,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:46:57,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:46:57,889 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:46:57,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:46:57" (1/1) ... [2023-12-02 13:46:57,955 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:46:57" (1/1) ... [2023-12-02 13:46:58,015 INFO L138 Inliner]: procedures = 690, calls = 1674, calls flagged for inlining = 52, calls inlined = 7, statements flattened = 696 [2023-12-02 13:46:58,016 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:46:58,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:46:58,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:46:58,016 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:46:58,026 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:46:57" (1/1) ... [2023-12-02 13:46:58,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:46:57" (1/1) ... [2023-12-02 13:46:58,034 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:46:57" (1/1) ... [2023-12-02 13:46:58,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:46:57" (1/1) ... [2023-12-02 13:46:58,069 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:46:57" (1/1) ... [2023-12-02 13:46:58,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:46:57" (1/1) ... [2023-12-02 13:46:58,081 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:46:57" (1/1) ... [2023-12-02 13:46:58,086 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:46:57" (1/1) ... [2023-12-02 13:46:58,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:46:58,100 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:46:58,100 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:46:58,100 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:46:58,101 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:46:57" (1/1) ... [2023-12-02 13:46:58,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:46:58,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:46:58,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:46:58,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:46:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:46:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-12-02 13:46:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-12-02 13:46:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-12-02 13:46:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-12-02 13:46:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-12-02 13:46:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-12-02 13:46:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-12-02 13:46:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-12-02 13:46:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 13:46:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-12-02 13:46:58,169 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-12-02 13:46:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 13:46:58,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 13:46:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 13:46:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:46:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:46:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-12-02 13:46:58,170 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-12-02 13:46:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:46:58,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:46:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-12-02 13:46:58,171 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-12-02 13:46:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-12-02 13:46:58,171 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-12-02 13:46:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-12-02 13:46:58,171 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-12-02 13:46:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-12-02 13:46:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-12-02 13:46:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:46:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:46:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-12-02 13:46:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-12-02 13:46:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-12-02 13:46:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-12-02 13:46:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:46:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 13:46:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 13:46:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-12-02 13:46:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-12-02 13:46:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-12-02 13:46:58,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-12-02 13:46:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 13:46:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-12-02 13:46:58,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-12-02 13:46:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:46:58,421 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:46:58,423 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:46:59,213 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:46:59,405 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:46:59,405 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 13:46:59,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:46:59 BoogieIcfgContainer [2023-12-02 13:46:59,407 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:46:59,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:46:59,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:46:59,413 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:46:59,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:46:55" (1/3) ... [2023-12-02 13:46:59,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42765798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:46:59, skipping insertion in model container [2023-12-02 13:46:59,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:46:57" (2/3) ... [2023-12-02 13:46:59,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42765798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:46:59, skipping insertion in model container [2023-12-02 13:46:59,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:46:59" (3/3) ... [2023-12-02 13:46:59,416 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_copy_harness_negated.i [2023-12-02 13:46:59,434 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:46:59,434 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:46:59,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:46:59,494 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;@735e9f39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:46:59,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:46:59,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 90 states have (on average 1.1777777777777778) internal successors, (106), 91 states have internal predecessors, (106), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-02 13:46:59,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-02 13:46:59,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:46:59,515 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:46:59,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:46:59,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:46:59,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1241364036, now seen corresponding path program 1 times [2023-12-02 13:46:59,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:46:59,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178424413] [2023-12-02 13:46:59,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:46:59,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:46:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:46:59,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:46:59,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178424413] [2023-12-02 13:46:59,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-02 13:46:59,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595832797] [2023-12-02 13:46:59,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:46:59,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:46:59,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:46:59,988 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:46:59,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:47:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:47:00,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 2313 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:47:00,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:47:00,752 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-02 13:47:00,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:47:00,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595832797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:47:00,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:47:00,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:47:00,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384426027] [2023-12-02 13:47:00,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:47:00,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:47:00,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:47:00,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:47:00,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:47:00,789 INFO L87 Difference]: Start difference. First operand has 180 states, 90 states have (on average 1.1777777777777778) internal successors, (106), 91 states have internal predecessors, (106), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-12-02 13:47:01,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:47:01,418 INFO L93 Difference]: Finished difference Result 356 states and 514 transitions. [2023-12-02 13:47:01,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:47:01,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 112 [2023-12-02 13:47:01,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:47:01,433 INFO L225 Difference]: With dead ends: 356 [2023-12-02 13:47:01,434 INFO L226 Difference]: Without dead ends: 180 [2023-12-02 13:47:01,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:47:01,443 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 49 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:47:01,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 719 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:47:01,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-02 13:47:01,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2023-12-02 13:47:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 90 states have (on average 1.1666666666666667) internal successors, (105), 92 states have internal predecessors, (105), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2023-12-02 13:47:01,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 258 transitions. [2023-12-02 13:47:01,509 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 258 transitions. Word has length 112 [2023-12-02 13:47:01,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:47:01,510 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 258 transitions. [2023-12-02 13:47:01,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-12-02 13:47:01,511 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 258 transitions. [2023-12-02 13:47:01,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-02 13:47:01,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:47:01,515 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:47:01,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:47:01,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 13:47:01,721 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:47:01,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:47:01,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2003067533, now seen corresponding path program 1 times [2023-12-02 13:47:01,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:47:01,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100131336] [2023-12-02 13:47:01,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:47:01,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:47:01,862 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:47:01,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391449814] [2023-12-02 13:47:01,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:47:01,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:47:01,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:47:01,864 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:47:01,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:47:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:47:02,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 2445 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:47:02,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:47:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-12-02 13:47:02,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:47:02,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:47:02,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100131336] [2023-12-02 13:47:02,506 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:47:02,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391449814] [2023-12-02 13:47:02,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391449814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:47:02,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:47:02,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:47:02,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991701626] [2023-12-02 13:47:02,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:47:02,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:47:02,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:47:02,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:47:02,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:47:02,514 INFO L87 Difference]: Start difference. First operand 180 states and 258 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-12-02 13:47:03,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:47:03,132 INFO L93 Difference]: Finished difference Result 330 states and 471 transitions. [2023-12-02 13:47:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:47:03,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 121 [2023-12-02 13:47:03,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:47:03,136 INFO L225 Difference]: With dead ends: 330 [2023-12-02 13:47:03,136 INFO L226 Difference]: Without dead ends: 180 [2023-12-02 13:47:03,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:47:03,138 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 47 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:47:03,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 719 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 13:47:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-02 13:47:03,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2023-12-02 13:47:03,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 90 states have (on average 1.1666666666666667) internal successors, (105), 92 states have internal predecessors, (105), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2023-12-02 13:47:03,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 256 transitions. [2023-12-02 13:47:03,167 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 256 transitions. Word has length 121 [2023-12-02 13:47:03,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:47:03,168 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 256 transitions. [2023-12-02 13:47:03,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-12-02 13:47:03,168 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 256 transitions. [2023-12-02 13:47:03,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-02 13:47:03,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:47:03,172 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:47:03,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 13:47:03,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 13:47:03,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:47:03,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:47:03,378 INFO L85 PathProgramCache]: Analyzing trace with hash -790327184, now seen corresponding path program 2 times [2023-12-02 13:47:03,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:47:03,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376137646] [2023-12-02 13:47:03,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:47:03,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:47:03,526 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:47:03,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2031397519] [2023-12-02 13:47:03,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:47:03,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:47:03,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:47:03,528 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:47:03,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:47:04,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 13:47:04,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:47:04,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:47:04,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:47:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2023-12-02 13:47:04,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:47:04,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:47:04,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376137646] [2023-12-02 13:47:04,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:47:04,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031397519] [2023-12-02 13:47:04,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031397519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:47:04,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:47:04,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:47:04,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255033498] [2023-12-02 13:47:04,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:47:04,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:47:04,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:47:04,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:47:04,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:47:04,066 INFO L87 Difference]: Start difference. First operand 180 states and 256 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 13:47:05,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:47:05,002 INFO L93 Difference]: Finished difference Result 228 states and 318 transitions. [2023-12-02 13:47:05,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:47:05,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 130 [2023-12-02 13:47:05,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:47:05,007 INFO L225 Difference]: With dead ends: 228 [2023-12-02 13:47:05,007 INFO L226 Difference]: Without dead ends: 184 [2023-12-02 13:47:05,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:47:05,009 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 1 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:47:05,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 894 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 13:47:05,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-02 13:47:05,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-12-02 13:47:05,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 93 states have (on average 1.1612903225806452) internal successors, (108), 95 states have internal predecessors, (108), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (82), 71 states have call predecessors, (82), 70 states have call successors, (82) [2023-12-02 13:47:05,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 261 transitions. [2023-12-02 13:47:05,035 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 261 transitions. Word has length 130 [2023-12-02 13:47:05,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:47:05,036 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 261 transitions. [2023-12-02 13:47:05,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 13:47:05,037 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 261 transitions. [2023-12-02 13:47:05,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-02 13:47:05,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:47:05,039 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:47:05,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 13:47:05,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:47:05,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:47:05,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:47:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash -942346917, now seen corresponding path program 1 times [2023-12-02 13:47:05,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:47:05,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774182553] [2023-12-02 13:47:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:47:05,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:47:05,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:47:05,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [845021917] [2023-12-02 13:47:05,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:47:05,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:47:05,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:47:05,339 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:47:05,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:47:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:47:05,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 2576 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:47:05,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:47:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-02 13:47:05,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:47:05,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:47:05,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774182553] [2023-12-02 13:47:05,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:47:05,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845021917] [2023-12-02 13:47:05,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845021917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:47:05,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:47:05,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 13:47:05,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444430881] [2023-12-02 13:47:05,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:47:05,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:47:05,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:47:05,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:47:05,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:47:05,942 INFO L87 Difference]: Start difference. First operand 184 states and 261 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-02 13:47:07,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:47:07,128 INFO L93 Difference]: Finished difference Result 327 states and 460 transitions. [2023-12-02 13:47:07,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:47:07,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 134 [2023-12-02 13:47:07,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:47:07,132 INFO L225 Difference]: With dead ends: 327 [2023-12-02 13:47:07,132 INFO L226 Difference]: Without dead ends: 184 [2023-12-02 13:47:07,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:47:07,134 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 75 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:47:07,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 852 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 13:47:07,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-02 13:47:07,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-12-02 13:47:07,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 93 states have (on average 1.1612903225806452) internal successors, (108), 95 states have internal predecessors, (108), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (77), 71 states have call predecessors, (77), 70 states have call successors, (77) [2023-12-02 13:47:07,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 256 transitions. [2023-12-02 13:47:07,154 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 256 transitions. Word has length 134 [2023-12-02 13:47:07,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:47:07,155 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 256 transitions. [2023-12-02 13:47:07,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-02 13:47:07,156 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 256 transitions. [2023-12-02 13:47:07,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-02 13:47:07,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:47:07,159 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:47:07,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 13:47:07,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:47:07,360 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:47:07,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:47:07,360 INFO L85 PathProgramCache]: Analyzing trace with hash 373745893, now seen corresponding path program 1 times [2023-12-02 13:47:07,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:47:07,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178783017] [2023-12-02 13:47:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:47:07,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:47:07,451 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:47:07,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420427481] [2023-12-02 13:47:07,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:47:07,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:47:07,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:47:07,453 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:47:07,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 13:47:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:47:08,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 2721 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:47:08,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:47:08,162 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-12-02 13:47:08,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:47:08,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:47:08,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178783017] [2023-12-02 13:47:08,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:47:08,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420427481] [2023-12-02 13:47:08,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420427481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:47:08,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:47:08,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 13:47:08,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536290994] [2023-12-02 13:47:08,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:47:08,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:47:08,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:47:08,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:47:08,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:47:08,166 INFO L87 Difference]: Start difference. First operand 184 states and 256 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-12-02 13:47:09,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:47:09,027 INFO L93 Difference]: Finished difference Result 324 states and 445 transitions. [2023-12-02 13:47:09,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:47:09,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 142 [2023-12-02 13:47:09,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:47:09,030 INFO L225 Difference]: With dead ends: 324 [2023-12-02 13:47:09,030 INFO L226 Difference]: Without dead ends: 182 [2023-12-02 13:47:09,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:47:09,032 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 74 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:47:09,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 850 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 13:47:09,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-02 13:47:09,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-12-02 13:47:09,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 92 states have (on average 1.1521739130434783) internal successors, (106), 93 states have internal predecessors, (106), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2023-12-02 13:47:09,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 249 transitions. [2023-12-02 13:47:09,048 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 249 transitions. Word has length 142 [2023-12-02 13:47:09,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:47:09,049 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 249 transitions. [2023-12-02 13:47:09,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-12-02 13:47:09,049 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 249 transitions. [2023-12-02 13:47:09,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-02 13:47:09,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:47:09,052 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:47:09,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 13:47:09,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:47:09,253 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:47:09,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:47:09,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2063628862, now seen corresponding path program 1 times [2023-12-02 13:47:09,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:47:09,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556130374] [2023-12-02 13:47:09,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:47:09,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:47:09,357 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:47:09,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810077037] [2023-12-02 13:47:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:47:09,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:47:09,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:47:09,359 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:47:09,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 13:47:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:47:09,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 2853 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:47:09,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:47:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-02 13:47:09,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:47:09,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:47:09,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556130374] [2023-12-02 13:47:09,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:47:09,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810077037] [2023-12-02 13:47:09,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810077037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:47:09,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:47:09,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 13:47:09,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015225097] [2023-12-02 13:47:09,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:47:09,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:47:09,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:47:09,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:47:09,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:47:09,958 INFO L87 Difference]: Start difference. First operand 182 states and 249 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2023-12-02 13:47:11,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:47:11,057 INFO L93 Difference]: Finished difference Result 227 states and 304 transitions. [2023-12-02 13:47:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:47:11,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 151 [2023-12-02 13:47:11,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:47:11,060 INFO L225 Difference]: With dead ends: 227 [2023-12-02 13:47:11,060 INFO L226 Difference]: Without dead ends: 191 [2023-12-02 13:47:11,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:47:11,061 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 4 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:47:11,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1108 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 13:47:11,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-12-02 13:47:11,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 184. [2023-12-02 13:47:11,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 94 states have (on average 1.148936170212766) internal successors, (108), 95 states have internal predecessors, (108), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2023-12-02 13:47:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 251 transitions. [2023-12-02 13:47:11,077 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 251 transitions. Word has length 151 [2023-12-02 13:47:11,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:47:11,078 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 251 transitions. [2023-12-02 13:47:11,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2023-12-02 13:47:11,078 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 251 transitions. [2023-12-02 13:47:11,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-02 13:47:11,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:47:11,080 INFO L195 NwaCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:47:11,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 13:47:11,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 13:47:11,281 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:47:11,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:47:11,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1836665842, now seen corresponding path program 1 times [2023-12-02 13:47:11,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:47:11,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497503844] [2023-12-02 13:47:11,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:47:11,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:47:11,383 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:47:11,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981367822] [2023-12-02 13:47:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:47:11,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:47:11,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:47:11,385 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:47:11,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c67838-4fe7-4d20-9351-c1a10e21d7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 13:47:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:47:12,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 2972 conjuncts, 180 conjunts are in the unsatisfiable core [2023-12-02 13:47:12,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:47:12,087 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-12-02 13:47:12,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2023-12-02 13:47:12,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 13:47:12,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 13:47:13,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 124 [2023-12-02 13:47:13,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:47:13,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:47:13,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:47:13,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:47:13,616 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 13:47:13,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 11 [2023-12-02 13:47:14,558 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2023-12-02 13:47:14,559 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 2 case distinctions, treesize of input 23 treesize of output 25 [2023-12-02 13:47:14,570 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-12-02 13:47:14,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 31 [2023-12-02 13:47:14,744 WARN L876 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.offset|))) is different from true [2023-12-02 13:47:14,759 WARN L876 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0)))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0))) |c_#memory_$Pointer$.offset|))) is different from true [2023-12-02 13:47:14,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-02 13:47:14,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-12-02 13:47:15,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-02 13:47:15,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 13:47:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 169 proven. 51 refuted. 0 times theorem prover too weak. 84 trivial. 5 not checked. [2023-12-02 13:47:15,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:47:16,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:47:16,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497503844] [2023-12-02 13:47:16,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:47:16,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981367822] [2023-12-02 13:47:16,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981367822] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:47:16,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [956456691] [2023-12-02 13:47:16,186 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2023-12-02 13:47:16,187 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:47:16,190 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:47:16,195 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:47:16,195 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:55:15,433 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 64 for LOIs [2023-12-02 13:55:15,493 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_valid with input of size 40 for LOIs [2023-12-02 13:55:15,903 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_bounded with input of size 2154 for LOIs [2023-12-02 13:55:32,040 INFO L197 IcfgInterpreter]: Interpreting procedure aws_mul_size_checked with input of size 114 for LOIs [2023-12-02 13:55:33,256 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_mult with input of size 118 for LOIs [2023-12-02 13:55:33,291 INFO L197 IcfgInterpreter]: Interpreting procedure aws_raise_error with input of size 158 for LOIs [2023-12-02 13:55:33,376 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_array_list_has_allocated_data_member with input of size 40 for LOIs [2023-12-02 13:55:36,407 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_allocator with input of size 92 for LOIs [2023-12-02 13:55:36,451 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 36 for LOIs [2023-12-02 13:55:36,455 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:59:30,627 WARN L293 SmtUtils]: Spent 3.78m on a formula simplification. DAG size of input: 2147 DAG size of output: 2143 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:59:56,520 WARN L293 SmtUtils]: Spent 24.12s on a formula simplification. DAG size of input: 2154 DAG size of output: 45 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)