./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire --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 188eb157187c65ed20c0598818206541e0c8a29005d59be8891bc5ebe4132fce --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:13:37,003 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:13:37,074 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:13:37,081 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:13:37,082 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:13:37,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:13:37,113 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:13:37,114 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:13:37,115 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:13:37,116 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:13:37,116 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:13:37,117 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:13:37,118 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:13:37,119 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:13:37,119 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:13:37,120 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:13:37,121 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:13:37,122 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:13:37,122 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:13:37,123 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:13:37,124 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:13:37,125 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:13:37,128 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:13:37,129 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:13:37,130 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:13:37,132 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:13:37,132 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:13:37,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:13:37,134 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:13:37,134 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:13:37,135 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:13:37,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:13:37,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:13:37,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:13:37,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:37,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:13:37,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:13:37,139 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:13:37,139 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:13:37,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:13:37,140 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:13:37,141 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:13:37,141 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:13:37,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:13:37,142 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_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 188eb157187c65ed20c0598818206541e0c8a29005d59be8891bc5ebe4132fce [2023-11-23 21:13:37,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:13:37,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:13:37,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:13:37,600 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:13:37,601 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:13:37,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i [2023-11-23 21:13:41,037 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:13:41,778 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:13:41,780 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i [2023-11-23 21:13:41,839 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/data/c56fede1a/4c7d49c9d0b148fdaa9ed49ed48d737f/FLAGb4af78e74 [2023-11-23 21:13:41,859 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/data/c56fede1a/4c7d49c9d0b148fdaa9ed49ed48d737f [2023-11-23 21:13:41,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:13:41,865 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:13:41,867 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:41,867 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:13:41,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:13:41,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:41" (1/1) ... [2023-11-23 21:13:41,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2379b1f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:41, skipping insertion in model container [2023-11-23 21:13:41,877 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:41" (1/1) ... [2023-11-23 21:13:42,084 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:13:42,483 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_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4504,4517] [2023-11-23 21:13:42,495 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_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4564,4577] [2023-11-23 21:13:43,787 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:43,788 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:43,789 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:43,790 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:43,791 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:43,847 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:43,848 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:43,850 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:43,851 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:44,373 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:13:44,375 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:13:44,377 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:13:44,378 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:13:44,381 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:13:44,382 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:13:44,383 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:13:44,384 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:13:44,385 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:13:44,386 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:13:44,593 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:44,594 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:44,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:44,708 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:13:44,722 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_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4504,4517] [2023-11-23 21:13:44,723 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_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4564,4577] [2023-11-23 21:13:44,794 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:44,795 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:44,796 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:44,796 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:44,797 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:44,820 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:44,821 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:44,822 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:44,823 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:44,875 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:13:44,876 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:13:44,877 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:13:44,878 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:13:44,880 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:13:44,881 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:13:44,881 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:13:44,882 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:13:44,883 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:13:44,883 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:13:44,928 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:44,929 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:44,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7671-7682] [2023-11-23 21:13:44,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:45,195 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:45,196 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:45,196 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:45,196 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:45,196 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:45,197 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:45,197 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:45,197 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:45,197 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:45,197 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:45,198 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:45,198 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:45,198 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:45,198 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:45,198 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:45,207 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:13:45,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:45 WrapperNode [2023-11-23 21:13:45,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:45,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:45,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:13:45,209 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:13:45,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:45" (1/1) ... [2023-11-23 21:13:45,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:45" (1/1) ... [2023-11-23 21:13:45,457 INFO L138 Inliner]: procedures = 688, calls = 1531, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 682 [2023-11-23 21:13:45,458 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:45,460 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:13:45,460 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:13:45,460 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:13:45,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:45" (1/1) ... [2023-11-23 21:13:45,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:45" (1/1) ... [2023-11-23 21:13:45,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:45" (1/1) ... [2023-11-23 21:13:45,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:45" (1/1) ... [2023-11-23 21:13:45,579 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:45" (1/1) ... [2023-11-23 21:13:45,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:45" (1/1) ... [2023-11-23 21:13:45,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:45" (1/1) ... [2023-11-23 21:13:45,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:45" (1/1) ... [2023-11-23 21:13:45,670 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:13:45,671 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:13:45,671 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:13:45,671 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:13:45,672 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:45" (1/1) ... [2023-11-23 21:13:45,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:45,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:45,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:13:45,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:13:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 21:13:45,807 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 21:13:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:13:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 21:13:45,809 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 21:13:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:13:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 21:13:45,809 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 21:13:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:13:45,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:13:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:13:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:13:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:13:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:13:45,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:13:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 21:13:45,811 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 21:13:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-23 21:13:45,812 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-23 21:13:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 21:13:45,812 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 21:13:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-23 21:13:45,813 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-23 21:13:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:13:45,814 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:13:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:13:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:13:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:13:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 21:13:45,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 21:13:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 21:13:45,815 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 21:13:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:13:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-23 21:13:45,816 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-23 21:13:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-23 21:13:45,816 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-23 21:13:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:13:46,218 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:13:46,222 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:13:47,339 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:13:47,649 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:13:47,649 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 21:13:47,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:47 BoogieIcfgContainer [2023-11-23 21:13:47,652 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:13:47,658 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:13:47,658 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:13:47,663 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:13:47,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:13:41" (1/3) ... [2023-11-23 21:13:47,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f57a834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:47, skipping insertion in model container [2023-11-23 21:13:47,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:45" (2/3) ... [2023-11-23 21:13:47,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f57a834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:47, skipping insertion in model container [2023-11-23 21:13:47,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:47" (3/3) ... [2023-11-23 21:13:47,674 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_static_harness_negated.i [2023-11-23 21:13:47,700 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:13:47,700 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:13:47,787 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:13:47,801 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;@33c6dcf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:13:47,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:13:47,807 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 72 states have internal predecessors, (85), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-23 21:13:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 21:13:47,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:47,833 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:47,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:47,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:47,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1454262698, now seen corresponding path program 1 times [2023-11-23 21:13:47,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:47,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533580526] [2023-11-23 21:13:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:47,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:48,458 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:13:48,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945297019] [2023-11-23 21:13:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:48,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:13:48,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:48,462 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:13:48,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:13:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:49,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:13:49,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:13:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-23 21:13:49,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:13:49,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:49,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533580526] [2023-11-23 21:13:49,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:13:49,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945297019] [2023-11-23 21:13:49,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945297019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:49,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:49,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:13:49,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477998071] [2023-11-23 21:13:49,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:49,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:13:49,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:49,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:13:49,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:13:49,443 INFO L87 Difference]: Start difference. First operand has 134 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 72 states have internal predecessors, (85), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-23 21:13:49,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:49,727 INFO L93 Difference]: Finished difference Result 230 states and 316 transitions. [2023-11-23 21:13:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:13:49,731 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 114 [2023-11-23 21:13:49,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:49,745 INFO L225 Difference]: With dead ends: 230 [2023-11-23 21:13:49,746 INFO L226 Difference]: Without dead ends: 131 [2023-11-23 21:13:49,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:13:49,765 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:49,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:13:49,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-23 21:13:49,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-23 21:13:49,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 69 states have (on average 1.144927536231884) internal successors, (79), 70 states have internal predecessors, (79), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-23 21:13:49,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 174 transitions. [2023-11-23 21:13:49,874 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 174 transitions. Word has length 114 [2023-11-23 21:13:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:49,876 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 174 transitions. [2023-11-23 21:13:49,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-23 21:13:49,881 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 174 transitions. [2023-11-23 21:13:49,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-23 21:13:49,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:49,885 INFO L195 NwaCegarLoop]: trace histogram [14, 9, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:49,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 21:13:50,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:13:50,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:50,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:50,102 INFO L85 PathProgramCache]: Analyzing trace with hash -772303204, now seen corresponding path program 1 times [2023-11-23 21:13:50,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:50,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039931070] [2023-11-23 21:13:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:50,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:50,325 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:13:50,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821531631] [2023-11-23 21:13:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:50,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:13:50,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:50,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:13:50,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:13:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:51,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 2400 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:13:51,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:13:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-23 21:13:51,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:13:51,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:51,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039931070] [2023-11-23 21:13:51,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:13:51,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821531631] [2023-11-23 21:13:51,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821531631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:51,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:51,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:13:51,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312809042] [2023-11-23 21:13:51,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:51,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:13:51,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:51,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:13:51,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:13:51,411 INFO L87 Difference]: Start difference. First operand 131 states and 174 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 5 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-23 21:13:52,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:52,275 INFO L93 Difference]: Finished difference Result 202 states and 263 transitions. [2023-11-23 21:13:52,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:13:52,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 5 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) Word has length 127 [2023-11-23 21:13:52,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:52,282 INFO L225 Difference]: With dead ends: 202 [2023-11-23 21:13:52,283 INFO L226 Difference]: Without dead ends: 133 [2023-11-23 21:13:52,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:13:52,286 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 28 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:52,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 726 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 21:13:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-23 21:13:52,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-23 21:13:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 72 states have internal predecessors, (80), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-23 21:13:52,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 177 transitions. [2023-11-23 21:13:52,310 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 177 transitions. Word has length 127 [2023-11-23 21:13:52,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:52,312 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 177 transitions. [2023-11-23 21:13:52,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 5 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-23 21:13:52,312 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 177 transitions. [2023-11-23 21:13:52,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 21:13:52,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:52,316 INFO L195 NwaCegarLoop]: trace histogram [14, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:52,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 21:13:52,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:13:52,538 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:52,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:52,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1667917333, now seen corresponding path program 1 times [2023-11-23 21:13:52,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:52,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519551788] [2023-11-23 21:13:52,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:52,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:52,718 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:13:52,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853493600] [2023-11-23 21:13:52,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:52,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:13:52,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:52,720 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:13:52,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:13:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:53,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 2532 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:13:53,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:13:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-23 21:13:53,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:13:53,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:53,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519551788] [2023-11-23 21:13:53,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:13:53,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853493600] [2023-11-23 21:13:53,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853493600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:53,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:53,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:13:53,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577063060] [2023-11-23 21:13:53,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:53,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:13:53,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:53,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:13:53,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:13:53,572 INFO L87 Difference]: Start difference. First operand 133 states and 177 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-23 21:13:54,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:54,088 INFO L93 Difference]: Finished difference Result 221 states and 289 transitions. [2023-11-23 21:13:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:13:54,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 136 [2023-11-23 21:13:54,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:54,092 INFO L225 Difference]: With dead ends: 221 [2023-11-23 21:13:54,092 INFO L226 Difference]: Without dead ends: 133 [2023-11-23 21:13:54,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:13:54,095 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 8 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:54,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 750 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:13:54,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-23 21:13:54,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-23 21:13:54,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 70 states have (on average 1.1285714285714286) internal successors, (79), 72 states have internal predecessors, (79), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-23 21:13:54,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 176 transitions. [2023-11-23 21:13:54,114 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 176 transitions. Word has length 136 [2023-11-23 21:13:54,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:54,115 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 176 transitions. [2023-11-23 21:13:54,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-23 21:13:54,116 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 176 transitions. [2023-11-23 21:13:54,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-23 21:13:54,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:54,119 INFO L195 NwaCegarLoop]: trace histogram [14, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:54,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:13:54,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:13:54,345 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:54,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:54,346 INFO L85 PathProgramCache]: Analyzing trace with hash 834330955, now seen corresponding path program 1 times [2023-11-23 21:13:54,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:54,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355308018] [2023-11-23 21:13:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:54,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:54,444 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:13:54,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729318758] [2023-11-23 21:13:54,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:54,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:13:54,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:54,446 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:13:54,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:13:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:55,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 2539 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:13:55,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:13:55,188 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-23 21:13:55,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:13:55,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:55,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355308018] [2023-11-23 21:13:55,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:13:55,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729318758] [2023-11-23 21:13:55,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729318758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:55,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:55,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:13:55,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475680245] [2023-11-23 21:13:55,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:55,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:13:55,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:55,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:13:55,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:55,193 INFO L87 Difference]: Start difference. First operand 133 states and 176 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 21:13:55,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:55,402 INFO L93 Difference]: Finished difference Result 222 states and 290 transitions. [2023-11-23 21:13:55,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:13:55,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 137 [2023-11-23 21:13:55,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:55,406 INFO L225 Difference]: With dead ends: 222 [2023-11-23 21:13:55,406 INFO L226 Difference]: Without dead ends: 134 [2023-11-23 21:13:55,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:55,408 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 0 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:55,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 308 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:13:55,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-23 21:13:55,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2023-11-23 21:13:55,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 71 states have (on average 1.1267605633802817) internal successors, (80), 73 states have internal predecessors, (80), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-23 21:13:55,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 177 transitions. [2023-11-23 21:13:55,429 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 177 transitions. Word has length 137 [2023-11-23 21:13:55,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:55,430 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 177 transitions. [2023-11-23 21:13:55,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 21:13:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 177 transitions. [2023-11-23 21:13:55,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-23 21:13:55,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:55,434 INFO L195 NwaCegarLoop]: trace histogram [14, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:55,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:13:55,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:13:55,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:55,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:55,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1162576298, now seen corresponding path program 1 times [2023-11-23 21:13:55,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:55,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215784828] [2023-11-23 21:13:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:55,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:55,788 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:13:55,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882661286] [2023-11-23 21:13:55,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:55,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:13:55,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:55,790 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:13:55,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_690bb49a-2b14-44cf-8f7b-f12b60dddf7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:13:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:56,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 2558 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 21:13:56,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:13:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 104 proven. 1 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-23 21:13:56,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:13:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-11-23 21:13:57,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:57,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215784828] [2023-11-23 21:13:57,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:13:57,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882661286] [2023-11-23 21:13:57,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882661286] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:13:57,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [667926162] [2023-11-23 21:13:57,205 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2023-11-23 21:13:57,205 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:13:57,211 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:13:57,219 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:13:57,219 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs