./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --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 efb3bc3d53d5de978717fadeb26804aec5f97721ade955fc2d1463ef24ff6010 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:22:37,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:22:37,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:22:37,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:22:37,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:22:37,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:22:37,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:22:37,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:22:37,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:22:37,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:22:37,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:22:37,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:22:37,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:22:37,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:22:37,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:22:37,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:22:37,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:22:37,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:22:37,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:22:37,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:22:37,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:22:37,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:22:37,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:22:37,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:22:37,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:22:37,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:22:37,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:22:37,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:22:37,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:22:37,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:22:37,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:22:37,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:22:37,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:22:37,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:22:37,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:22:37,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:22:37,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:22:37,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:22:37,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:22:37,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:22:37,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:22:37,090 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 11:22:37,109 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:22:37,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:22:37,109 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:22:37,109 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:22:37,110 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:22:37,110 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:22:37,110 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:22:37,110 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:22:37,110 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:22:37,110 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:22:37,110 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:22:37,111 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:22:37,111 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:22:37,111 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:22:37,111 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:22:37,111 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:22:37,111 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:22:37,111 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:22:37,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:22:37,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:22:37,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:22:37,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:22:37,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:22:37,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:22:37,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:22:37,113 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:22:37,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:22:37,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:22:37,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:22:37,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:22:37,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:22:37,113 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:22:37,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:22:37,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:22:37,114 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:22:37,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:22:37,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:22:37,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:22:37,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efb3bc3d53d5de978717fadeb26804aec5f97721ade955fc2d1463ef24ff6010 [2022-12-14 11:22:37,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:22:37,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:22:37,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:22:37,312 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:22:37,313 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:22:37,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2022-12-14 11:22:39,890 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:22:40,222 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:22:40,223 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2022-12-14 11:22:40,247 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/data/ef2004385/790bd8c76e3c481f8a0a26700b65f8bb/FLAGb9ea669e9 [2022-12-14 11:22:40,259 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/data/ef2004385/790bd8c76e3c481f8a0a26700b65f8bb [2022-12-14 11:22:40,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:22:40,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:22:40,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:22:40,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:22:40,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:22:40,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:22:40" (1/1) ... [2022-12-14 11:22:40,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6701c8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:40, skipping insertion in model container [2022-12-14 11:22:40,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:22:40" (1/1) ... [2022-12-14 11:22:40,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:22:40,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:22:40,547 WARN L237 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_5375cf64-5e5d-4fd4-9824-12b07105e0c0/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2022-12-14 11:22:40,552 WARN L237 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_5375cf64-5e5d-4fd4-9824-12b07105e0c0/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2022-12-14 11:22:40,999 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 11:22:41,035 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 11:22:41,045 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 11:22:41,050 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,050 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,051 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,051 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,052 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,055 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 11:22:41,061 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,061 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,062 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,063 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,121 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 11:22:41,121 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 11:22:41,122 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 11:22:41,125 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 11:22:41,127 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 11:22:41,127 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 11:22:41,225 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 11:22:41,333 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 11:22:41,334 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 11:22:41,335 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 11:22:41,336 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 11:22:41,337 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 11:22:41,338 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 11:22:41,339 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 11:22:41,339 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 11:22:41,340 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 11:22:41,340 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 11:22:41,341 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 11:22:41,481 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 11:22:41,483 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 11:22:41,484 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,485 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,510 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 11:22:41,532 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 11:22:41,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:22:41,557 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:22:41,566 WARN L237 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_5375cf64-5e5d-4fd4-9824-12b07105e0c0/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2022-12-14 11:22:41,566 WARN L237 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_5375cf64-5e5d-4fd4-9824-12b07105e0c0/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2022-12-14 11:22:41,587 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 11:22:41,591 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 11:22:41,594 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 11:22:41,597 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,597 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,597 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,598 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,598 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,600 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 11:22:41,603 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,603 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,604 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,604 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,609 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 11:22:41,609 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 11:22:41,610 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 11:22:41,612 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 11:22:41,613 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 11:22:41,613 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 11:22:41,614 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 11:22:41,635 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 11:22:41,636 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 11:22:41,637 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 11:22:41,638 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 11:22:41,639 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 11:22:41,639 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 11:22:41,640 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 11:22:41,640 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 11:22:41,640 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 11:22:41,641 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 11:22:41,641 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 11:22:41,661 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 11:22:41,663 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 11:22:41,663 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,663 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:22:41,667 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 11:22:41,676 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 11:22:41,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:22:41,797 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:22:41,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:41 WrapperNode [2022-12-14 11:22:41,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:22:41,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:22:41,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:22:41,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:22:41,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:41" (1/1) ... [2022-12-14 11:22:41,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:41" (1/1) ... [2022-12-14 11:22:41,885 INFO L138 Inliner]: procedures = 689, calls = 1496, calls flagged for inlining = 55, calls inlined = 9, statements flattened = 597 [2022-12-14 11:22:41,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:22:41,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:22:41,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:22:41,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:22:41,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:41" (1/1) ... [2022-12-14 11:22:41,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:41" (1/1) ... [2022-12-14 11:22:41,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:41" (1/1) ... [2022-12-14 11:22:41,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:41" (1/1) ... [2022-12-14 11:22:41,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:41" (1/1) ... [2022-12-14 11:22:41,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:41" (1/1) ... [2022-12-14 11:22:41,926 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:41" (1/1) ... [2022-12-14 11:22:41,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:41" (1/1) ... [2022-12-14 11:22:41,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:22:41,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:22:41,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:22:41,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:22:41,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:41" (1/1) ... [2022-12-14 11:22:41,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:22:41,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:22:41,965 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:22:41,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:22:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-12-14 11:22:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-12-14 11:22:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:22:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-12-14 11:22:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-12-14 11:22:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-12-14 11:22:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-12-14 11:22:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 11:22:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 11:22:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 11:22:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-12-14 11:22:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-12-14 11:22:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 11:22:42,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 11:22:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 11:22:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:22:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 11:22:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:22:42,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:22:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clean_up [2022-12-14 11:22:42,008 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clean_up [2022-12-14 11:22:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 11:22:42,008 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 11:22:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-12-14 11:22:42,008 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-12-14 11:22:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-12-14 11:22:42,009 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-12-14 11:22:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-12-14 11:22:42,009 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-12-14 11:22:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 11:22:42,009 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 11:22:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:22:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 11:22:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 11:22:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-14 11:22:42,010 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-14 11:22:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-12-14 11:22:42,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-12-14 11:22:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 11:22:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-12-14 11:22:42,011 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-12-14 11:22:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-12-14 11:22:42,011 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-12-14 11:22:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-12-14 11:22:42,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-12-14 11:22:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:22:42,229 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:22:42,232 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:22:42,918 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:22:43,059 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:22:43,059 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 11:22:43,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:22:43 BoogieIcfgContainer [2022-12-14 11:22:43,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:22:43,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:22:43,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:22:43,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:22:43,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:22:40" (1/3) ... [2022-12-14 11:22:43,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711d3d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:22:43, skipping insertion in model container [2022-12-14 11:22:43,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:41" (2/3) ... [2022-12-14 11:22:43,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711d3d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:22:43, skipping insertion in model container [2022-12-14 11:22:43,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:22:43" (3/3) ... [2022-12-14 11:22:43,068 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_clean_up_harness.i [2022-12-14 11:22:43,083 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:22:43,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:22:43,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:22:43,139 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=LoopsAndPotentialCycles, 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;@57b142d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:22:43,139 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:22:43,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 73 states have (on average 1.2328767123287672) internal successors, (90), 74 states have internal predecessors, (90), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-12-14 11:22:43,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 11:22:43,154 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:22:43,155 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2022-12-14 11:22:43,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:22:43,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:22:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash 302334839, now seen corresponding path program 1 times [2022-12-14 11:22:43,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:22:43,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207162982] [2022-12-14 11:22:43,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:43,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:22:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:22:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-14 11:22:43,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:22:43,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207162982] [2022-12-14 11:22:43,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207162982] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:22:43,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:22:43,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:22:43,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262564480] [2022-12-14 11:22:43,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:22:43,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:22:43,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:22:43,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:22:43,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:22:43,609 INFO L87 Difference]: Start difference. First operand has 126 states, 73 states have (on average 1.2328767123287672) internal successors, (90), 74 states have internal predecessors, (90), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 11:22:43,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:22:43,835 INFO L93 Difference]: Finished difference Result 199 states and 255 transitions. [2022-12-14 11:22:43,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:22:43,837 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 82 [2022-12-14 11:22:43,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:22:43,844 INFO L225 Difference]: With dead ends: 199 [2022-12-14 11:22:43,844 INFO L226 Difference]: Without dead ends: 124 [2022-12-14 11:22:43,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:22:43,848 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:22:43,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:22:43,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-12-14 11:22:43,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-12-14 11:22:43,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 73 states have internal predecessors, (86), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-12-14 11:22:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 155 transitions. [2022-12-14 11:22:43,882 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 155 transitions. Word has length 82 [2022-12-14 11:22:43,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:22:43,883 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 155 transitions. [2022-12-14 11:22:43,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 11:22:43,883 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 155 transitions. [2022-12-14 11:22:43,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 11:22:43,885 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:22:43,886 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-12-14 11:22:43,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:22:43,886 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:22:43,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:22:43,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1397942290, now seen corresponding path program 1 times [2022-12-14 11:22:43,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:22:43,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114078451] [2022-12-14 11:22:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:43,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:22:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:22:44,215 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-14 11:22:44,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:22:44,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114078451] [2022-12-14 11:22:44,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114078451] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:22:44,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:22:44,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:22:44,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445547150] [2022-12-14 11:22:44,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:22:44,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:22:44,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:22:44,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:22:44,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:22:44,219 INFO L87 Difference]: Start difference. First operand 124 states and 155 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 11:22:44,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:22:44,528 INFO L93 Difference]: Finished difference Result 200 states and 248 transitions. [2022-12-14 11:22:44,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:22:44,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 95 [2022-12-14 11:22:44,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:22:44,532 INFO L225 Difference]: With dead ends: 200 [2022-12-14 11:22:44,532 INFO L226 Difference]: Without dead ends: 124 [2022-12-14 11:22:44,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:22:44,534 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 18 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:22:44,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 463 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:22:44,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-12-14 11:22:44,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-12-14 11:22:44,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 73 states have internal predecessors, (85), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-12-14 11:22:44,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 154 transitions. [2022-12-14 11:22:44,544 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 154 transitions. Word has length 95 [2022-12-14 11:22:44,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:22:44,544 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 154 transitions. [2022-12-14 11:22:44,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 11:22:44,544 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 154 transitions. [2022-12-14 11:22:44,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 11:22:44,546 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:22:44,547 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 1, 1] [2022-12-14 11:22:44,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:22:44,547 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:22:44,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:22:44,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1657397374, now seen corresponding path program 1 times [2022-12-14 11:22:44,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:22:44,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382990791] [2022-12-14 11:22:44,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:44,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:22:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:22:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-14 11:22:44,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:22:44,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382990791] [2022-12-14 11:22:44,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382990791] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:22:44,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:22:44,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 11:22:44,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555141582] [2022-12-14 11:22:44,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:22:44,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:22:44,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:22:44,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:22:44,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:22:44,905 INFO L87 Difference]: Start difference. First operand 124 states and 154 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-14 11:22:45,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:22:45,351 INFO L93 Difference]: Finished difference Result 211 states and 265 transitions. [2022-12-14 11:22:45,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 11:22:45,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 103 [2022-12-14 11:22:45,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:22:45,355 INFO L225 Difference]: With dead ends: 211 [2022-12-14 11:22:45,355 INFO L226 Difference]: Without dead ends: 126 [2022-12-14 11:22:45,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-12-14 11:22:45,358 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 43 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 11:22:45,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 700 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 11:22:45,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-12-14 11:22:45,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-12-14 11:22:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 75 states have internal predecessors, (86), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2022-12-14 11:22:45,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 157 transitions. [2022-12-14 11:22:45,376 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 157 transitions. Word has length 103 [2022-12-14 11:22:45,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:22:45,377 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 157 transitions. [2022-12-14 11:22:45,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-14 11:22:45,377 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 157 transitions. [2022-12-14 11:22:45,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-14 11:22:45,380 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:22:45,381 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:22:45,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:22:45,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:22:45,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:22:45,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2091627990, now seen corresponding path program 1 times [2022-12-14 11:22:45,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:22:45,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975206659] [2022-12-14 11:22:45,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:45,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:22:45,468 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:22:45,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250038391] [2022-12-14 11:22:45,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:45,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:45,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:22:45,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:22:45,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:22:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:22:45,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 2391 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 11:22:45,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:22:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 11:22:45,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:22:45,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:22:45,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975206659] [2022-12-14 11:22:45,967 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:22:45,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250038391] [2022-12-14 11:22:45,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250038391] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:22:45,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:22:45,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:22:45,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416820047] [2022-12-14 11:22:45,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:22:45,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:22:45,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:22:45,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:22:45,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:22:45,969 INFO L87 Difference]: Start difference. First operand 126 states and 157 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-12-14 11:22:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:22:46,246 INFO L93 Difference]: Finished difference Result 205 states and 253 transitions. [2022-12-14 11:22:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:22:46,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 112 [2022-12-14 11:22:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:22:46,248 INFO L225 Difference]: With dead ends: 205 [2022-12-14 11:22:46,248 INFO L226 Difference]: Without dead ends: 126 [2022-12-14 11:22:46,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:22:46,249 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 28 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:22:46,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 560 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:22:46,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-12-14 11:22:46,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-12-14 11:22:46,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 75 states have internal predecessors, (85), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2022-12-14 11:22:46,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 156 transitions. [2022-12-14 11:22:46,257 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 156 transitions. Word has length 112 [2022-12-14 11:22:46,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:22:46,257 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 156 transitions. [2022-12-14 11:22:46,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-12-14 11:22:46,257 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 156 transitions. [2022-12-14 11:22:46,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-14 11:22:46,259 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:22:46,259 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:22:46,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:22:46,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:46,460 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:22:46,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:22:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash -374318214, now seen corresponding path program 1 times [2022-12-14 11:22:46,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:22:46,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085528509] [2022-12-14 11:22:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:46,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:22:46,628 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:22:46,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83129819] [2022-12-14 11:22:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:46,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:46,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:22:46,630 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:22:46,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:22:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:22:47,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 2445 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 11:22:47,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:22:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 11:22:47,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:22:47,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:22:47,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085528509] [2022-12-14 11:22:47,092 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:22:47,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83129819] [2022-12-14 11:22:47,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83129819] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:22:47,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:22:47,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 11:22:47,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758802504] [2022-12-14 11:22:47,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:22:47,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:22:47,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:22:47,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:22:47,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:22:47,094 INFO L87 Difference]: Start difference. First operand 126 states and 156 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-12-14 11:22:47,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:22:47,606 INFO L93 Difference]: Finished difference Result 210 states and 259 transitions. [2022-12-14 11:22:47,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 11:22:47,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 120 [2022-12-14 11:22:47,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:22:47,608 INFO L225 Difference]: With dead ends: 210 [2022-12-14 11:22:47,608 INFO L226 Difference]: Without dead ends: 126 [2022-12-14 11:22:47,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-14 11:22:47,610 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 42 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:22:47,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 766 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 11:22:47,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-12-14 11:22:47,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-12-14 11:22:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 75 states have internal predecessors, (85), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-12-14 11:22:47,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2022-12-14 11:22:47,618 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 120 [2022-12-14 11:22:47,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:22:47,618 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2022-12-14 11:22:47,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-12-14 11:22:47,619 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2022-12-14 11:22:47,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-14 11:22:47,620 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:22:47,620 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:22:47,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:22:47,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:47,821 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:22:47,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:22:47,823 INFO L85 PathProgramCache]: Analyzing trace with hash -805476928, now seen corresponding path program 1 times [2022-12-14 11:22:47,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:22:47,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107142289] [2022-12-14 11:22:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:47,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:22:48,011 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:22:48,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531598396] [2022-12-14 11:22:48,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:48,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:48,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:22:48,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:22:48,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:22:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:22:48,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 2577 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 11:22:48,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:22:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-12-14 11:22:48,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:22:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-12-14 11:22:48,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:22:48,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107142289] [2022-12-14 11:22:48,646 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:22:48,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531598396] [2022-12-14 11:22:48,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531598396] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 11:22:48,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:22:48,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-12-14 11:22:48,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995353255] [2022-12-14 11:22:48,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:22:48,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:22:48,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:22:48,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:22:48,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-14 11:22:48,649 INFO L87 Difference]: Start difference. First operand 126 states and 155 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-12-14 11:22:49,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:22:49,050 INFO L93 Difference]: Finished difference Result 136 states and 169 transitions. [2022-12-14 11:22:49,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:22:49,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 129 [2022-12-14 11:22:49,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:22:49,053 INFO L225 Difference]: With dead ends: 136 [2022-12-14 11:22:49,053 INFO L226 Difference]: Without dead ends: 134 [2022-12-14 11:22:49,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-14 11:22:49,054 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 6 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 11:22:49,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 632 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 11:22:49,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-12-14 11:22:49,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2022-12-14 11:22:49,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 76 states have (on average 1.1710526315789473) internal successors, (89), 80 states have internal predecessors, (89), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-12-14 11:22:49,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 166 transitions. [2022-12-14 11:22:49,068 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 166 transitions. Word has length 129 [2022-12-14 11:22:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:22:49,069 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 166 transitions. [2022-12-14 11:22:49,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-12-14 11:22:49,069 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 166 transitions. [2022-12-14 11:22:49,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-12-14 11:22:49,071 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:22:49,071 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:22:49,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:22:49,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:49,272 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:22:49,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:22:49,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1502331150, now seen corresponding path program 1 times [2022-12-14 11:22:49,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:22:49,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438413417] [2022-12-14 11:22:49,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:49,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:22:49,385 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:22:49,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681895204] [2022-12-14 11:22:49,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:49,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:49,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:22:49,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:22:49,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:22:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:22:49,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 2580 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 11:22:49,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:22:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-12-14 11:22:49,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:22:49,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:22:49,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438413417] [2022-12-14 11:22:49,854 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:22:49,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681895204] [2022-12-14 11:22:49,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681895204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:22:49,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:22:49,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:22:49,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722007836] [2022-12-14 11:22:49,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:22:49,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:22:49,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:22:49,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:22:49,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:22:49,856 INFO L87 Difference]: Start difference. First operand 133 states and 166 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-12-14 11:22:50,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:22:50,352 INFO L93 Difference]: Finished difference Result 217 states and 270 transitions. [2022-12-14 11:22:50,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:22:50,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 130 [2022-12-14 11:22:50,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:22:50,354 INFO L225 Difference]: With dead ends: 217 [2022-12-14 11:22:50,354 INFO L226 Difference]: Without dead ends: 133 [2022-12-14 11:22:50,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:22:50,355 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 8 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:22:50,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 619 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 11:22:50,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-12-14 11:22:50,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-12-14 11:22:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 80 states have internal predecessors, (88), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-12-14 11:22:50,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 165 transitions. [2022-12-14 11:22:50,363 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 165 transitions. Word has length 130 [2022-12-14 11:22:50,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:22:50,363 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 165 transitions. [2022-12-14 11:22:50,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-12-14 11:22:50,363 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 165 transitions. [2022-12-14 11:22:50,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-14 11:22:50,364 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:22:50,364 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:22:50,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 11:22:50,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:50,566 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:22:50,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:22:50,567 INFO L85 PathProgramCache]: Analyzing trace with hash -980891915, now seen corresponding path program 1 times [2022-12-14 11:22:50,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:22:50,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620809939] [2022-12-14 11:22:50,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:50,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:22:50,669 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:22:50,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367042629] [2022-12-14 11:22:50,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:50,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:50,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:22:50,671 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:22:50,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 11:22:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:22:51,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 2587 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-14 11:22:51,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:22:51,160 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-12-14 11:22:51,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:22:51,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:22:51,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620809939] [2022-12-14 11:22:51,160 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:22:51,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367042629] [2022-12-14 11:22:51,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367042629] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:22:51,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:22:51,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:22:51,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570963517] [2022-12-14 11:22:51,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:22:51,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 11:22:51,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:22:51,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 11:22:51,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:22:51,161 INFO L87 Difference]: Start difference. First operand 133 states and 165 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-12-14 11:22:51,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:22:51,734 INFO L93 Difference]: Finished difference Result 218 states and 270 transitions. [2022-12-14 11:22:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:22:51,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 131 [2022-12-14 11:22:51,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:22:51,736 INFO L225 Difference]: With dead ends: 218 [2022-12-14 11:22:51,736 INFO L226 Difference]: Without dead ends: 134 [2022-12-14 11:22:51,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-14 11:22:51,736 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 10 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:22:51,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 619 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 11:22:51,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-12-14 11:22:51,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-12-14 11:22:51,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 77 states have (on average 1.155844155844156) internal successors, (89), 81 states have internal predecessors, (89), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-12-14 11:22:51,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 166 transitions. [2022-12-14 11:22:51,745 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 166 transitions. Word has length 131 [2022-12-14 11:22:51,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:22:51,745 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 166 transitions. [2022-12-14 11:22:51,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-12-14 11:22:51,746 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 166 transitions. [2022-12-14 11:22:51,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-14 11:22:51,747 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:22:51,747 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:22:51,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 11:22:51,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:51,948 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:22:51,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:22:51,948 INFO L85 PathProgramCache]: Analyzing trace with hash -780578724, now seen corresponding path program 1 times [2022-12-14 11:22:51,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:22:51,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097327256] [2022-12-14 11:22:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:51,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:22:52,036 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:22:52,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493386198] [2022-12-14 11:22:52,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:52,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:52,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:22:52,037 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:22:52,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 11:22:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:22:52,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 2606 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 11:22:52,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:22:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-14 11:22:52,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:22:52,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:22:52,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097327256] [2022-12-14 11:22:52,463 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:22:52,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493386198] [2022-12-14 11:22:52,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493386198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:22:52,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:22:52,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:22:52,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536069601] [2022-12-14 11:22:52,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:22:52,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:22:52,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:22:52,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:22:52,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:22:52,464 INFO L87 Difference]: Start difference. First operand 134 states and 166 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 11:22:52,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:22:52,941 INFO L93 Difference]: Finished difference Result 229 states and 292 transitions. [2022-12-14 11:22:52,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:22:52,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 132 [2022-12-14 11:22:52,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:22:52,942 INFO L225 Difference]: With dead ends: 229 [2022-12-14 11:22:52,942 INFO L226 Difference]: Without dead ends: 138 [2022-12-14 11:22:52,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:22:52,943 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 5 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:22:52,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 360 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 11:22:52,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-12-14 11:22:52,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 135. [2022-12-14 11:22:52,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 78 states have (on average 1.1538461538461537) internal successors, (90), 82 states have internal predecessors, (90), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-12-14 11:22:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 167 transitions. [2022-12-14 11:22:52,954 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 167 transitions. Word has length 132 [2022-12-14 11:22:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:22:52,954 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 167 transitions. [2022-12-14 11:22:52,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 11:22:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 167 transitions. [2022-12-14 11:22:52,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 11:22:52,956 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:22:52,956 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:22:52,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 11:22:53,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:53,158 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:22:53,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:22:53,160 INFO L85 PathProgramCache]: Analyzing trace with hash 944768320, now seen corresponding path program 1 times [2022-12-14 11:22:53,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:22:53,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008233624] [2022-12-14 11:22:53,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:53,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:22:53,230 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:22:53,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353575980] [2022-12-14 11:22:53,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:53,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:53,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:22:53,232 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:22:53,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5375cf64-5e5d-4fd4-9824-12b07105e0c0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 11:22:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:22:53,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 2612 conjuncts, 176 conjunts are in the unsatisfiable core [2022-12-14 11:22:53,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:22:53,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:22:54,390 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:22:54,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-12-14 11:22:56,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:22:56,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:22:56,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-12-14 11:22:59,165 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_796 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_796) |c_#memory_int|)) is different from true [2022-12-14 11:22:59,477 INFO L350 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 53 treesize of output 47 [2022-12-14 11:22:59,484 INFO L350 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 47 treesize of output 41 [2022-12-14 11:22:59,923 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-12-14 11:22:59,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 231 treesize of output 1 [2022-12-14 11:22:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 29 proven. 10 refuted. 3 times theorem prover too weak. 27 trivial. 2 not checked. [2022-12-14 11:22:59,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:23:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-12-14 11:23:01,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:23:01,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008233624] [2022-12-14 11:23:01,585 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:23:01,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353575980] [2022-12-14 11:23:01,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353575980] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:23:01,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1716193372] [2022-12-14 11:23:01,605 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2022-12-14 11:23:01,605 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:23:01,608 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:23:01,612 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:23:01,612 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:23:04,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:23:04,760 INFO L217 Elim1Store]: Index analysis took 321 ms [2022-12-14 11:23:16,764 WARN L233 SmtUtils]: Spent 11.95s on a formula simplification. DAG size of input: 1758 DAG size of output: 1169 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 11:23:16,767 INFO L321 Elim1Store]: treesize reduction 1958, result has 47.2 percent of original size [2022-12-14 11:23:16,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 196 select indices, 196 select index equivalence classes, 19112 disjoint index pairs (out of 19110 index pairs), introduced 196 new quantified variables, introduced 195 case distinctions, treesize of input 987 treesize of output 2346 [2022-12-14 11:23:19,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:23:19,558 INFO L217 Elim1Store]: Index analysis took 672 ms [2022-12-14 11:23:36,804 WARN L233 SmtUtils]: Spent 17.21s on a formula simplification. DAG size of input: 2150 DAG size of output: 1173 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 11:23:36,809 INFO L321 Elim1Store]: treesize reduction 3510, result has 33.3 percent of original size [2022-12-14 11:23:36,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 198 select indices, 198 select index equivalence classes, 19308 disjoint index pairs (out of 19503 index pairs), introduced 198 new quantified variables, introduced 390 case distinctions, treesize of input 997 treesize of output 2365 [2022-12-14 11:25:00,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:00,552 INFO L350 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 44 treesize of output 43 [2022-12-14 11:25:00,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:00,556 INFO L350 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 44 treesize of output 43 [2022-12-14 11:25:00,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:25:00,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:00,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:00,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2022-12-14 11:25:03,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:04,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 197 select indices, 197 select index equivalence classes, 19307 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 0 case distinctions, treesize of input 986 treesize of output 592 [2022-12-14 11:25:04,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:04,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:04,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:04,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:04,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:04,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:04,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:04,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 193 select indices, 193 select index equivalence classes, 16855 disjoint index pairs (out of 18528 index pairs), introduced 193 new quantified variables, introduced 0 case distinctions, treesize of input 1736 treesize of output 580 [2022-12-14 11:25:05,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,283 INFO L217 Elim1Store]: Index analysis took 128 ms [2022-12-14 11:25:05,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 193 select indices, 193 select index equivalence classes, 16855 disjoint index pairs (out of 18528 index pairs), introduced 193 new quantified variables, introduced 0 case distinctions, treesize of input 1736 treesize of output 580 [2022-12-14 11:25:05,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 198 select indices, 198 select index equivalence classes, 19503 disjoint index pairs (out of 19503 index pairs), introduced 198 new quantified variables, introduced 0 case distinctions, treesize of input 991 treesize of output 595 [2022-12-14 11:25:05,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:05,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:06,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 57 select indices, 57 select index equivalence classes, 1055 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 0 case distinctions, treesize of input 714 treesize of output 362 [2022-12-14 11:25:13,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:13,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 193 select indices, 193 select index equivalence classes, 16855 disjoint index pairs (out of 18528 index pairs), introduced 193 new quantified variables, introduced 0 case distinctions, treesize of input 1736 treesize of output 580 [2022-12-14 11:25:14,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 57 select indices, 57 select index equivalence classes, 1055 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 0 case distinctions, treesize of input 714 treesize of output 362 [2022-12-14 11:25:14,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:14,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 198 select indices, 198 select index equivalence classes, 19503 disjoint index pairs (out of 19503 index pairs), introduced 198 new quantified variables, introduced 0 case distinctions, treesize of input 991 treesize of output 595 [2022-12-14 11:25:15,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:15,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 197 select indices, 197 select index equivalence classes, 19307 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 0 case distinctions, treesize of input 986 treesize of output 592 [2022-12-14 11:25:15,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:15,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:15,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:15,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:15,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:15,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:15,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:15,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 193 select indices, 193 select index equivalence classes, 16855 disjoint index pairs (out of 18528 index pairs), introduced 193 new quantified variables, introduced 0 case distinctions, treesize of input 1736 treesize of output 580 [2022-12-14 11:25:32,818 INFO L350 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 23 treesize of output 11 [2022-12-14 11:25:32,939 INFO L350 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 42 treesize of output 30 [2022-12-14 11:25:32,984 INFO L350 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 36 treesize of output 24 [2022-12-14 11:25:33,219 INFO L350 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 23 treesize of output 11 [2022-12-14 11:25:33,363 INFO L350 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 42 treesize of output 30 [2022-12-14 11:25:33,414 INFO L350 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 36 treesize of output 24 [2022-12-14 11:25:48,398 INFO L350 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 23 treesize of output 11 [2022-12-14 11:25:48,467 INFO L350 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 42 treesize of output 30 [2022-12-14 11:25:48,506 INFO L350 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 36 treesize of output 24 [2022-12-14 11:25:48,762 INFO L350 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 23 treesize of output 11 [2022-12-14 11:25:48,830 INFO L350 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 42 treesize of output 30 [2022-12-14 11:25:48,869 INFO L350 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 36 treesize of output 24 [2022-12-14 11:25:51,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2375 treesize of output 2365 [2022-12-14 11:25:52,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2379 treesize of output 2358 [2022-12-14 11:25:52,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2375 treesize of output 2365 [2022-12-14 11:25:53,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:26:06,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:26:06,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-12-14 11:26:06,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-12-14 11:26:06,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:26:06,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:26:06,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:26:06,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:26:06,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:26:06,433 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:26:06,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 26 treesize of output 38 [2022-12-14 11:26:06,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:26:06,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:26:06,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:26:06,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:26:06,508 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:26:06,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 26 treesize of output 38 [2022-12-14 11:26:06,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:26:06,684 INFO L350 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 27 treesize of output 23 [2022-12-14 11:26:06,686 INFO L350 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 23 treesize of output 19 [2022-12-14 11:26:06,753 INFO L350 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 27 treesize of output 23 [2022-12-14 11:26:06,755 INFO L350 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 23 treesize of output 19 [2022-12-14 11:26:08,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 2371 treesize of output 2343 [2022-12-14 11:26:08,621 INFO L350 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 2339 treesize of output 2315 [2022-12-14 11:26:08,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 2323 treesize of output 2295 [2022-12-14 11:26:24,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 2371 treesize of output 2343 [2022-12-14 11:26:25,074 INFO L350 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 2339 treesize of output 2315 [2022-12-14 11:26:25,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 2323 treesize of output 2295 [2022-12-14 11:27:20,392 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_clean_up with input of size 69 for LOIs [2022-12-14 11:27:20,440 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 51 for LOIs [2022-12-14 11:27:20,455 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_bounded with input of size 2896 for LOIs [2022-12-14 11:27:33,413 INFO L197 IcfgInterpreter]: Interpreting procedure aws_priority_queue_is_valid with input of size 693 for LOIs [2022-12-14 11:27:37,263 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_valid with input of size 83 for LOIs [2022-12-14 11:27:37,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-12-14 11:27:37,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:27:37,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:27:37,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:27:37,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:27:37,389 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:27:37,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 10 [2022-12-14 11:27:37,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:27:37,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:27:37,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:27:37,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:27:37,482 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:27:37,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 10 [2022-12-14 11:27:37,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:27:37,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:27:37,680 INFO L197 IcfgInterpreter]: Interpreting procedure aws_mul_size_checked with input of size 107 for LOIs [2022-12-14 11:27:38,158 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_mult with input of size 94 for LOIs [2022-12-14 11:27:38,185 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_array_list_has_allocated_data_member with input of size 2963 for LOIs [2022-12-14 11:28:54,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:28:54,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 11:28:54,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:28:54,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 11:29:16,152 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_allocator with input of size 45 for LOIs [2022-12-14 11:29:16,155 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 43 for LOIs [2022-12-14 11:29:16,157 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:31:05,587 WARN L233 SmtUtils]: Spent 1.79m on a formula simplification. DAG size of input: 2825 DAG size of output: 2437 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:34:13,246 WARN L233 SmtUtils]: Spent 3.07m on a formula simplification. DAG size of input: 2896 DAG size of output: 2433 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)