./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/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_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/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_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/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 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d --- 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 09:07:11,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:07:11,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:07:11,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:07:11,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:07:11,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:07:11,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:07:11,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:07:11,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:07:11,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:07:11,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:07:11,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:07:11,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:07:11,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:07:11,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:07:11,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:07:11,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:07:11,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:07:11,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:07:11,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:07:11,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:07:11,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:07:11,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:07:11,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:07:11,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:07:11,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:07:11,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:07:11,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:07:11,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:07:11,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:07:11,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:07:11,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:07:11,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:07:11,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:07:11,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:07:11,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:07:11,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:07:11,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:07:11,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:07:11,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:07:11,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:07:11,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 09:07:11,594 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:07:11,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:07:11,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:07:11,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:07:11,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:07:11,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:07:11,596 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:07:11,596 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:07:11,596 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:07:11,596 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:07:11,596 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:07:11,597 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:07:11,597 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:07:11,597 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:07:11,597 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:07:11,597 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:07:11,597 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:07:11,598 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:07:11,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:07:11,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:07:11,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:07:11,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:07:11,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:07:11,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:07:11,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:07:11,599 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:07:11,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:07:11,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:07:11,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:07:11,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:07:11,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:07:11,600 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:07:11,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:07:11,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:07:11,601 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:07:11,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:07:11,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:07:11,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:07:11,601 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_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d [2022-12-14 09:07:11,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:07:11,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:07:11,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:07:11,815 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:07:11,816 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:07:11,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2022-12-14 09:07:14,369 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:07:14,659 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:07:14,659 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2022-12-14 09:07:14,676 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/data/67e33f1d8/7ad2bd8aea41455fafa765314cde609b/FLAG7e016a4c4 [2022-12-14 09:07:14,937 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/data/67e33f1d8/7ad2bd8aea41455fafa765314cde609b [2022-12-14 09:07:14,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:07:14,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:07:14,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:07:14,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:07:14,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:07:14,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:07:14" (1/1) ... [2022-12-14 09:07:14,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b3302ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:14, skipping insertion in model container [2022-12-14 09:07:14,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:07:14" (1/1) ... [2022-12-14 09:07:14,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:07:15,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:07:15,199 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_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4503,4516] [2022-12-14 09:07:15,206 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_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4563,4576] [2022-12-14 09:07:15,902 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:15,915 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:15,917 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:15,923 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:15,923 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:15,924 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:15,924 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:15,926 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:15,928 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:15,931 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:15,939 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:15,940 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:15,940 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:15,942 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:15,942 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,019 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 09:07:16,019 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 09:07:16,020 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 09:07:16,025 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 09:07:16,027 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 09:07:16,027 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 09:07:16,137 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,243 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 09:07:16,244 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 09:07:16,245 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 09:07:16,245 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 09:07:16,246 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 09:07:16,247 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 09:07:16,247 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 09:07:16,248 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 09:07:16,248 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 09:07:16,249 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 09:07:16,249 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 09:07:16,360 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 09:07:16,366 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,366 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,375 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,376 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,376 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,381 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,382 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,383 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,384 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,385 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 09:07:16,391 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 09:07:16,398 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,402 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,402 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,403 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,411 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 09:07:16,417 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,417 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,421 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,425 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,426 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,441 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,453 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 09:07:16,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:07:16,484 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:07:16,493 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_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4503,4516] [2022-12-14 09:07:16,493 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_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4563,4576] [2022-12-14 09:07:16,511 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,515 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,515 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,517 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,517 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,517 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,518 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,518 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,519 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,520 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,523 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,523 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,523 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,524 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,524 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,529 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 09:07:16,529 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 09:07:16,529 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 09:07:16,531 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 09:07:16,532 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 09:07:16,533 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 09:07:16,534 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,547 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 09:07:16,548 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 09:07:16,548 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 09:07:16,549 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 09:07:16,549 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 09:07:16,550 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 09:07:16,550 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 09:07:16,551 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 09:07:16,551 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 09:07:16,551 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 09:07:16,552 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 09:07:16,567 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 09:07:16,570 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,571 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,573 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,573 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,574 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,577 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,578 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,579 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,580 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,580 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 09:07:16,585 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 09:07:16,604 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,608 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,608 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,609 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,616 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 09:07:16,623 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,623 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:07:16,627 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,632 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,633 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 09:07:16,637 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 09:07:16,650 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 09:07:16,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:07:16,837 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:07:16,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:16 WrapperNode [2022-12-14 09:07:16,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:07:16,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:07:16,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:07:16,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:07:16,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:16" (1/1) ... [2022-12-14 09:07:16,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:16" (1/1) ... [2022-12-14 09:07:16,966 INFO L138 Inliner]: procedures = 692, calls = 2499, calls flagged for inlining = 57, calls inlined = 12, statements flattened = 1002 [2022-12-14 09:07:16,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:07:16,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:07:16,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:07:16,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:07:16,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:16" (1/1) ... [2022-12-14 09:07:16,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:16" (1/1) ... [2022-12-14 09:07:16,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:16" (1/1) ... [2022-12-14 09:07:16,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:16" (1/1) ... [2022-12-14 09:07:17,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:16" (1/1) ... [2022-12-14 09:07:17,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:16" (1/1) ... [2022-12-14 09:07:17,037 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:16" (1/1) ... [2022-12-14 09:07:17,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:16" (1/1) ... [2022-12-14 09:07:17,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:07:17,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:07:17,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:07:17,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:07:17,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:16" (1/1) ... [2022-12-14 09:07:17,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:07:17,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:07:17,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:07:17,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:07:17,114 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-12-14 09:07:17,115 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-12-14 09:07:17,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 09:07:17,115 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 09:07:17,115 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 09:07:17,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 09:07:17,115 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-12-14 09:07:17,115 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-12-14 09:07:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 09:07:17,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 09:07:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 09:07:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:07:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 09:07:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:07:17,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:07:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 09:07:17,117 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 09:07:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_realloc [2022-12-14 09:07:17,117 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_realloc [2022-12-14 09:07:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-12-14 09:07:17,117 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-12-14 09:07:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 09:07:17,117 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 09:07:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 09:07:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-12-14 09:07:17,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-12-14 09:07:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 09:07:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 09:07:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-14 09:07:17,118 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-14 09:07:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-12-14 09:07:17,118 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-12-14 09:07:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 09:07:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:07:17,303 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:07:17,305 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:07:18,260 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:07:18,453 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:07:18,453 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-14 09:07:18,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:07:18 BoogieIcfgContainer [2022-12-14 09:07:18,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:07:18,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:07:18,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:07:18,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:07:18,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:07:14" (1/3) ... [2022-12-14 09:07:18,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1321cbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:07:18, skipping insertion in model container [2022-12-14 09:07:18,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:16" (2/3) ... [2022-12-14 09:07:18,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1321cbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:07:18, skipping insertion in model container [2022-12-14 09:07:18,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:07:18" (3/3) ... [2022-12-14 09:07:18,464 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_relative_harness.i [2022-12-14 09:07:18,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:07:18,483 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:07:18,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:07:18,536 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;@a108dd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:07:18,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 09:07:18,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 73 states have (on average 1.3013698630136987) internal successors, (95), 72 states have internal predecessors, (95), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-12-14 09:07:18,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 09:07:18,546 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:07:18,546 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 09:07:18,547 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:07:18,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:07:18,551 INFO L85 PathProgramCache]: Analyzing trace with hash -688998339, now seen corresponding path program 1 times [2022-12-14 09:07:18,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:07:18,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015449353] [2022-12-14 09:07:18,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:07:18,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:07:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:07:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 09:07:19,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:07:19,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015449353] [2022-12-14 09:07:19,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015449353] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:07:19,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:07:19,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 09:07:19,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561737633] [2022-12-14 09:07:19,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:07:19,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 09:07:19,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:07:19,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 09:07:19,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:07:19,338 INFO L87 Difference]: Start difference. First operand has 122 states, 73 states have (on average 1.3013698630136987) internal successors, (95), 72 states have internal predecessors, (95), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 09:07:19,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:07:19,779 INFO L93 Difference]: Finished difference Result 235 states and 337 transitions. [2022-12-14 09:07:19,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 09:07:19,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2022-12-14 09:07:19,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:07:19,789 INFO L225 Difference]: With dead ends: 235 [2022-12-14 09:07:19,789 INFO L226 Difference]: Without dead ends: 124 [2022-12-14 09:07:19,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:07:19,795 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 5 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:07:19,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 709 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 09:07:19,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-12-14 09:07:19,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2022-12-14 09:07:19,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 73 states have internal predecessors, (87), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-12-14 09:07:19,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 162 transitions. [2022-12-14 09:07:19,838 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 162 transitions. Word has length 33 [2022-12-14 09:07:19,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:07:19,838 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 162 transitions. [2022-12-14 09:07:19,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 09:07:19,838 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 162 transitions. [2022-12-14 09:07:19,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 09:07:19,840 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:07:19,840 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 09:07:19,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:07:19,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:07:19,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:07:19,841 INFO L85 PathProgramCache]: Analyzing trace with hash 711815437, now seen corresponding path program 1 times [2022-12-14 09:07:19,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:07:19,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733898429] [2022-12-14 09:07:19,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:07:19,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:07:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:07:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 09:07:26,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:07:26,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733898429] [2022-12-14 09:07:26,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733898429] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:07:26,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521270050] [2022-12-14 09:07:26,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:07:26,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:07:26,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:07:26,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:07:26,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 09:07:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:07:26,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 69 conjunts are in the unsatisfiable core [2022-12-14 09:07:26,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:07:27,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 09:07:27,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 09:07:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:07:31,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:07:31,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521270050] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:07:31,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:07:31,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [14] total 29 [2022-12-14 09:07:31,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590147796] [2022-12-14 09:07:31,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:07:31,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 09:07:31,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:07:31,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 09:07:31,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2022-12-14 09:07:31,508 INFO L87 Difference]: Start difference. First operand 122 states and 162 transitions. Second operand has 20 states, 10 states have (on average 2.1) internal successors, (21), 14 states have internal predecessors, (21), 7 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-12-14 09:07:34,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:07:37,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:07:39,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:07:41,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:07:43,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:07:47,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:07:49,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:07:51,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:07:53,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:07:55,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:07:57,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:07:59,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:01,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:01,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:08:01,865 INFO L93 Difference]: Finished difference Result 229 states and 297 transitions. [2022-12-14 09:08:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-14 09:08:01,865 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 10 states have (on average 2.1) internal successors, (21), 14 states have internal predecessors, (21), 7 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 36 [2022-12-14 09:08:01,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:08:01,868 INFO L225 Difference]: With dead ends: 229 [2022-12-14 09:08:01,868 INFO L226 Difference]: Without dead ends: 216 [2022-12-14 09:08:01,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=187, Invalid=1453, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 09:08:01,869 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 223 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 134 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2022-12-14 09:08:01,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1946 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1665 Invalid, 13 Unknown, 0 Unchecked, 29.9s Time] [2022-12-14 09:08:01,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-12-14 09:08:01,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 212. [2022-12-14 09:08:01,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 125 states have (on average 1.2) internal successors, (150), 130 states have internal predecessors, (150), 64 states have call successors, (64), 21 states have call predecessors, (64), 22 states have return successors, (63), 60 states have call predecessors, (63), 61 states have call successors, (63) [2022-12-14 09:08:01,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 277 transitions. [2022-12-14 09:08:01,892 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 277 transitions. Word has length 36 [2022-12-14 09:08:01,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:08:01,892 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 277 transitions. [2022-12-14 09:08:01,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 10 states have (on average 2.1) internal successors, (21), 14 states have internal predecessors, (21), 7 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-12-14 09:08:01,893 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 277 transitions. [2022-12-14 09:08:01,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 09:08:01,893 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:08:01,893 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 09:08:01,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:08:02,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-14 09:08:02,095 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:08:02,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:08:02,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1189617025, now seen corresponding path program 1 times [2022-12-14 09:08:02,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:08:02,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083716477] [2022-12-14 09:08:02,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:08:02,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:08:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:08:02,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 09:08:02,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:08:02,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083716477] [2022-12-14 09:08:02,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083716477] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:08:02,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:08:02,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 09:08:02,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913648297] [2022-12-14 09:08:02,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:08:02,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 09:08:02,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:08:02,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 09:08:02,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:08:02,288 INFO L87 Difference]: Start difference. First operand 212 states and 277 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-14 09:08:02,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:08:02,487 INFO L93 Difference]: Finished difference Result 224 states and 289 transitions. [2022-12-14 09:08:02,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 09:08:02,488 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 38 [2022-12-14 09:08:02,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:08:02,490 INFO L225 Difference]: With dead ends: 224 [2022-12-14 09:08:02,490 INFO L226 Difference]: Without dead ends: 207 [2022-12-14 09:08:02,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:08:02,491 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 3 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:08:02,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 691 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:08:02,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-12-14 09:08:02,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 203. [2022-12-14 09:08:02,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 120 states have (on average 1.2) internal successors, (144), 124 states have internal predecessors, (144), 60 states have call successors, (60), 21 states have call predecessors, (60), 22 states have return successors, (60), 57 states have call predecessors, (60), 58 states have call successors, (60) [2022-12-14 09:08:02,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 264 transitions. [2022-12-14 09:08:02,521 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 264 transitions. Word has length 38 [2022-12-14 09:08:02,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:08:02,521 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 264 transitions. [2022-12-14 09:08:02,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-14 09:08:02,521 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 264 transitions. [2022-12-14 09:08:02,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-14 09:08:02,522 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:08:02,522 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:08:02,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 09:08:02,522 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:08:02,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:08:02,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1282645874, now seen corresponding path program 1 times [2022-12-14 09:08:02,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:08:02,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375984512] [2022-12-14 09:08:02,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:08:02,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:08:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:08:02,724 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 09:08:02,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:08:02,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375984512] [2022-12-14 09:08:02,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375984512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:08:02,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:08:02,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 09:08:02,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204786998] [2022-12-14 09:08:02,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:08:02,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:08:02,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:08:02,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:08:02,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:08:02,727 INFO L87 Difference]: Start difference. First operand 203 states and 264 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 09:08:03,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:08:03,015 INFO L93 Difference]: Finished difference Result 213 states and 273 transitions. [2022-12-14 09:08:03,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 09:08:03,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 47 [2022-12-14 09:08:03,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:08:03,017 INFO L225 Difference]: With dead ends: 213 [2022-12-14 09:08:03,017 INFO L226 Difference]: Without dead ends: 198 [2022-12-14 09:08:03,017 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 09:08:03,018 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 1 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:08:03,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 534 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:08:03,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-12-14 09:08:03,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-12-14 09:08:03,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 117 states have (on average 1.1965811965811965) internal successors, (140), 121 states have internal predecessors, (140), 58 states have call successors, (58), 21 states have call predecessors, (58), 22 states have return successors, (58), 55 states have call predecessors, (58), 56 states have call successors, (58) [2022-12-14 09:08:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 256 transitions. [2022-12-14 09:08:03,034 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 256 transitions. Word has length 47 [2022-12-14 09:08:03,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:08:03,034 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 256 transitions. [2022-12-14 09:08:03,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 09:08:03,034 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 256 transitions. [2022-12-14 09:08:03,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 09:08:03,035 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:08:03,035 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:08:03,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 09:08:03,035 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:08:03,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:08:03,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1416460378, now seen corresponding path program 1 times [2022-12-14 09:08:03,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:08:03,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910979643] [2022-12-14 09:08:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:08:03,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:08:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:08:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 09:08:04,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:08:04,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910979643] [2022-12-14 09:08:04,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910979643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:08:04,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:08:04,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 09:08:04,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292225791] [2022-12-14 09:08:04,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:08:04,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 09:08:04,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:08:04,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 09:08:04,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 09:08:04,255 INFO L87 Difference]: Start difference. First operand 198 states and 256 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-12-14 09:08:04,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:08:04,917 INFO L93 Difference]: Finished difference Result 383 states and 498 transitions. [2022-12-14 09:08:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 09:08:04,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 51 [2022-12-14 09:08:04,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:08:04,919 INFO L225 Difference]: With dead ends: 383 [2022-12-14 09:08:04,919 INFO L226 Difference]: Without dead ends: 198 [2022-12-14 09:08:04,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-14 09:08:04,921 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 58 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 09:08:04,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 567 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 09:08:04,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-12-14 09:08:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-12-14 09:08:04,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 117 states have (on average 1.188034188034188) internal successors, (139), 121 states have internal predecessors, (139), 58 states have call successors, (58), 21 states have call predecessors, (58), 22 states have return successors, (58), 55 states have call predecessors, (58), 56 states have call successors, (58) [2022-12-14 09:08:04,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 255 transitions. [2022-12-14 09:08:04,941 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 255 transitions. Word has length 51 [2022-12-14 09:08:04,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:08:04,941 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 255 transitions. [2022-12-14 09:08:04,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-12-14 09:08:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 255 transitions. [2022-12-14 09:08:04,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 09:08:04,942 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:08:04,942 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:08:04,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 09:08:04,943 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:08:04,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:08:04,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1277806468, now seen corresponding path program 1 times [2022-12-14 09:08:04,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:08:04,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336774013] [2022-12-14 09:08:04,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:08:04,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:08:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:08:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 09:08:11,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:08:11,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336774013] [2022-12-14 09:08:11,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336774013] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:08:11,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662625746] [2022-12-14 09:08:11,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:08:11,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:08:11,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:08:11,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:08:11,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 09:08:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:08:12,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-14 09:08:12,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:08:12,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-12-14 09:08:12,142 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 6 treesize of output 5 [2022-12-14 09:08:14,148 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:08:14,154 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:08:14,164 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:08:14,168 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:08:16,061 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 09:08:16,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 78 treesize of output 62 [2022-12-14 09:08:16,097 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 09:08:16,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 17 treesize of output 17 [2022-12-14 09:08:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:08:16,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:08:16,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662625746] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:08:16,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:08:16,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [17] total 28 [2022-12-14 09:08:16,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892824079] [2022-12-14 09:08:16,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:08:16,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 09:08:16,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:08:16,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 09:08:16,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-12-14 09:08:16,324 INFO L87 Difference]: Start difference. First operand 198 states and 255 transitions. Second operand has 17 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 7 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 09:08:19,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:22,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:24,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:26,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:28,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:31,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:34,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:36,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:38,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:40,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:42,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:44,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:46,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:49,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:51,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:53,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:08:53,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:08:53,166 INFO L93 Difference]: Finished difference Result 218 states and 269 transitions. [2022-12-14 09:08:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 09:08:53,167 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 7 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 55 [2022-12-14 09:08:53,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:08:53,168 INFO L225 Difference]: With dead ends: 218 [2022-12-14 09:08:53,168 INFO L226 Difference]: Without dead ends: 216 [2022-12-14 09:08:53,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=208, Invalid=1514, Unknown=0, NotChecked=0, Total=1722 [2022-12-14 09:08:53,169 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 217 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 184 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:08:53,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1221 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1636 Invalid, 16 Unknown, 0 Unchecked, 36.2s Time] [2022-12-14 09:08:53,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-12-14 09:08:53,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 212. [2022-12-14 09:08:53,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 125 states have (on average 1.176) internal successors, (147), 130 states have internal predecessors, (147), 58 states have call successors, (58), 26 states have call predecessors, (58), 28 states have return successors, (59), 55 states have call predecessors, (59), 56 states have call successors, (59) [2022-12-14 09:08:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 264 transitions. [2022-12-14 09:08:53,188 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 264 transitions. Word has length 55 [2022-12-14 09:08:53,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:08:53,189 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 264 transitions. [2022-12-14 09:08:53,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 7 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 09:08:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 264 transitions. [2022-12-14 09:08:53,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-14 09:08:53,190 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:08:53,190 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 09:08:53,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 09:08:53,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 09:08:53,392 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:08:53,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:08:53,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1060459529, now seen corresponding path program 1 times [2022-12-14 09:08:53,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:08:53,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497546291] [2022-12-14 09:08:53,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:08:53,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:08:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:08:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 09:08:53,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:08:53,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497546291] [2022-12-14 09:08:53,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497546291] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:08:53,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:08:53,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 09:08:53,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856501847] [2022-12-14 09:08:53,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:08:53,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 09:08:53,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:08:53,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 09:08:53,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:08:53,623 INFO L87 Difference]: Start difference. First operand 212 states and 264 transitions. Second operand has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-12-14 09:08:54,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:08:54,030 INFO L93 Difference]: Finished difference Result 258 states and 318 transitions. [2022-12-14 09:08:54,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 09:08:54,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 57 [2022-12-14 09:08:54,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:08:54,031 INFO L225 Difference]: With dead ends: 258 [2022-12-14 09:08:54,032 INFO L226 Difference]: Without dead ends: 224 [2022-12-14 09:08:54,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 09:08:54,033 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 9 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:08:54,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 792 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 09:08:54,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-12-14 09:08:54,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 216. [2022-12-14 09:08:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 129 states have (on average 1.1705426356589148) internal successors, (151), 134 states have internal predecessors, (151), 58 states have call successors, (58), 26 states have call predecessors, (58), 28 states have return successors, (59), 55 states have call predecessors, (59), 56 states have call successors, (59) [2022-12-14 09:08:54,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 268 transitions. [2022-12-14 09:08:54,057 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 268 transitions. Word has length 57 [2022-12-14 09:08:54,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:08:54,057 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 268 transitions. [2022-12-14 09:08:54,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-12-14 09:08:54,057 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 268 transitions. [2022-12-14 09:08:54,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 09:08:54,058 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:08:54,058 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:08:54,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 09:08:54,059 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:08:54,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:08:54,059 INFO L85 PathProgramCache]: Analyzing trace with hash -616975935, now seen corresponding path program 1 times [2022-12-14 09:08:54,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:08:54,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974354233] [2022-12-14 09:08:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:08:54,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:08:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:08:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 09:08:55,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:08:55,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974354233] [2022-12-14 09:08:55,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974354233] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:08:55,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:08:55,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-14 09:08:55,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557643496] [2022-12-14 09:08:55,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:08:55,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 09:08:55,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:08:55,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 09:08:55,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-12-14 09:08:55,746 INFO L87 Difference]: Start difference. First operand 216 states and 268 transitions. Second operand has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-14 09:08:57,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:08:57,280 INFO L93 Difference]: Finished difference Result 302 states and 376 transitions. [2022-12-14 09:08:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 09:08:57,280 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 60 [2022-12-14 09:08:57,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:08:57,282 INFO L225 Difference]: With dead ends: 302 [2022-12-14 09:08:57,282 INFO L226 Difference]: Without dead ends: 270 [2022-12-14 09:08:57,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2022-12-14 09:08:57,283 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 239 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:08:57,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 463 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 09:08:57,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-12-14 09:08:57,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 212. [2022-12-14 09:08:57,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 127 states have (on average 1.1574803149606299) internal successors, (147), 132 states have internal predecessors, (147), 56 states have call successors, (56), 26 states have call predecessors, (56), 28 states have return successors, (57), 53 states have call predecessors, (57), 54 states have call successors, (57) [2022-12-14 09:08:57,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 260 transitions. [2022-12-14 09:08:57,314 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 260 transitions. Word has length 60 [2022-12-14 09:08:57,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:08:57,314 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 260 transitions. [2022-12-14 09:08:57,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-14 09:08:57,314 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 260 transitions. [2022-12-14 09:08:57,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 09:08:57,315 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:08:57,315 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-12-14 09:08:57,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 09:08:57,315 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:08:57,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:08:57,316 INFO L85 PathProgramCache]: Analyzing trace with hash -687849599, now seen corresponding path program 1 times [2022-12-14 09:08:57,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:08:57,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954147421] [2022-12-14 09:08:57,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:08:57,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:08:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 09:09:07,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:09:07,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954147421] [2022-12-14 09:09:07,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954147421] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:09:07,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701739945] [2022-12-14 09:09:07,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:07,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:09:07,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:09:07,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:09:07,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbdc1a2-1ea9-46df-aa9a-7facc4cee378/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 09:09:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:08,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 2599 conjuncts, 118 conjunts are in the unsatisfiable core [2022-12-14 09:09:08,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:09:08,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-12-14 09:09:17,040 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 82 treesize of output 70 [2022-12-14 09:09:17,064 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:09:17,070 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:09:17,436 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_349 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base|) |c_aws_add_size_checked_#in~r#1.offset| v_ArrVal_349)))) (exists ((v_ArrVal_348 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base|) |c_aws_add_size_checked_#in~r#1.offset| v_ArrVal_348)) |c_#memory_$Pointer$.base|))) is different from true [2022-12-14 09:09:17,449 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 20 treesize of output 19 [2022-12-14 09:09:17,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:09:17,464 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 09:09:17,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 40 [2022-12-14 09:09:24,060 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 09:09:24,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 104 treesize of output 72 [2022-12-14 09:09:24,108 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 09:09:24,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 17 treesize of output 17 [2022-12-14 09:09:24,287 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:09:24,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:09:26,444 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-12-14 09:15:49,325 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.