./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI --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 065f95e1f01b1c2bb5cc332c26e118823e72d0e75cb3966f20aacf6dc1740b4a --- 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-5e519f3 [2022-11-03 02:37:22,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:37:22,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:37:22,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:37:22,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:37:22,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:37:22,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:37:22,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:37:22,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:37:22,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:37:22,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:37:22,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:37:22,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:37:22,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:37:22,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:37:22,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:37:22,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:37:22,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:37:22,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:37:22,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:37:22,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:37:22,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:37:22,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:37:22,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:37:22,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:37:22,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:37:22,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:37:22,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:37:22,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:37:22,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:37:22,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:37:22,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:37:22,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:37:22,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:37:22,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:37:22,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:37:22,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:37:22,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:37:22,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:37:22,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:37:22,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:37:22,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:37:22,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:37:22,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:37:22,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:37:22,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:37:22,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:37:22,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:37:22,193 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:37:22,193 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:37:22,193 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:37:22,193 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:37:22,200 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:37:22,200 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:37:22,200 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:37:22,201 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:37:22,201 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:37:22,201 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:37:22,201 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:37:22,202 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:37:22,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:37:22,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:37:22,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:37:22,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:37:22,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:37:22,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:37:22,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:37:22,205 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:37:22,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:37:22,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:37:22,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:37:22,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:37:22,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:37:22,209 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:37:22,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:37:22,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:37:22,210 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:37:22,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:37:22,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:37:22,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:37:22,210 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_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 065f95e1f01b1c2bb5cc332c26e118823e72d0e75cb3966f20aacf6dc1740b4a [2022-11-03 02:37:22,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:37:22,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:37:22,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:37:22,652 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:37:22,653 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:37:22,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i [2022-11-03 02:37:22,770 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/data/e442f1e24/e9f8dd01f935409d9a3ebdbcf9556407/FLAGd850503fd [2022-11-03 02:37:23,812 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:37:23,813 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i [2022-11-03 02:37:23,871 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/data/e442f1e24/e9f8dd01f935409d9a3ebdbcf9556407/FLAGd850503fd [2022-11-03 02:37:24,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/data/e442f1e24/e9f8dd01f935409d9a3ebdbcf9556407 [2022-11-03 02:37:24,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:37:24,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:37:24,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:37:24,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:37:24,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:37:24,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:37:24" (1/1) ... [2022-11-03 02:37:24,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a52db05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:24, skipping insertion in model container [2022-11-03 02:37:24,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:37:24" (1/1) ... [2022-11-03 02:37:24,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:37:24,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:37:24,797 WARN L230 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_ba517854-8280-4c7e-bda2-0b13910614a9/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i[4499,4512] [2022-11-03 02:37:24,805 WARN L230 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_ba517854-8280-4c7e-bda2-0b13910614a9/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i[4559,4572] [2022-11-03 02:37:25,987 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:25,988 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:25,989 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:25,990 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:25,992 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:26,009 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:26,010 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:26,013 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:26,014 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:26,649 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 02:37:26,652 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 02:37:26,655 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 02:37:26,659 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 02:37:26,665 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 02:37:26,671 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 02:37:26,672 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 02:37:26,673 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 02:37:26,674 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 02:37:26,675 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 02:37:26,986 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 02:37:27,177 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:27,179 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:27,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:37:27,416 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:37:27,449 WARN L230 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_ba517854-8280-4c7e-bda2-0b13910614a9/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i[4499,4512] [2022-11-03 02:37:27,450 WARN L230 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_ba517854-8280-4c7e-bda2-0b13910614a9/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i[4559,4572] [2022-11-03 02:37:27,524 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:27,525 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:27,525 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:27,526 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:27,526 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:27,542 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:27,543 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:27,545 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:27,545 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:27,601 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 02:37:27,602 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 02:37:27,603 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 02:37:27,604 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 02:37:27,609 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 02:37:27,609 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 02:37:27,610 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 02:37:27,610 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 02:37:27,611 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 02:37:27,611 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 02:37:27,646 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 02:37:27,791 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:27,792 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:37:27,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:37:28,097 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:37:28,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:28 WrapperNode [2022-11-03 02:37:28,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:37:28,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:37:28,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:37:28,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:37:28,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:28" (1/1) ... [2022-11-03 02:37:28,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:28" (1/1) ... [2022-11-03 02:37:28,303 INFO L138 Inliner]: procedures = 691, calls = 2645, calls flagged for inlining = 62, calls inlined = 11, statements flattened = 975 [2022-11-03 02:37:28,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:37:28,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:37:28,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:37:28,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:37:28,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:28" (1/1) ... [2022-11-03 02:37:28,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:28" (1/1) ... [2022-11-03 02:37:28,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:28" (1/1) ... [2022-11-03 02:37:28,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:28" (1/1) ... [2022-11-03 02:37:28,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:28" (1/1) ... [2022-11-03 02:37:28,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:28" (1/1) ... [2022-11-03 02:37:28,456 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:28" (1/1) ... [2022-11-03 02:37:28,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:28" (1/1) ... [2022-11-03 02:37:28,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:37:28,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:37:28,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:37:28,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:37:28,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:28" (1/1) ... [2022-11-03 02:37:28,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:37:28,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:28,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:37:28,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:37:28,630 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2022-11-03 02:37:28,631 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2022-11-03 02:37:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-03 02:37:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-03 02:37:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure ntohl [2022-11-03 02:37:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:37:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-03 02:37:28,635 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-03 02:37:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-11-03 02:37:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:37:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:37:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:37:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:37:28,637 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:37:28,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 02:37:28,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 02:37:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:37:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:37:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:37:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh32 [2022-11-03 02:37:28,639 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh32 [2022-11-03 02:37:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:37:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:37:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-03 02:37:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-03 02:37:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-03 02:37:28,641 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-03 02:37:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:37:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:37:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-03 02:37:28,642 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-03 02:37:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:37:28,643 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:37:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:37:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:37:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:37:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-03 02:37:28,644 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-03 02:37:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:37:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-11-03 02:37:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:37:29,109 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:37:29,112 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:37:31,268 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:37:31,605 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:37:31,606 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:37:31,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:31 BoogieIcfgContainer [2022-11-03 02:37:31,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:37:31,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:37:31,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:37:31,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:37:31,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:37:24" (1/3) ... [2022-11-03 02:37:31,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce505b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:37:31, skipping insertion in model container [2022-11-03 02:37:31,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:28" (2/3) ... [2022-11-03 02:37:31,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce505b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:37:31, skipping insertion in model container [2022-11-03 02:37:31,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:31" (3/3) ... [2022-11-03 02:37:31,630 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be32_harness.i [2022-11-03 02:37:31,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:37:31,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:37:31,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:37:31,774 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;@13b55d97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:37:31,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:37:31,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 65 states have (on average 1.2) internal successors, (78), 66 states have internal predecessors, (78), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-03 02:37:31,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 02:37:31,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:31,800 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:31,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:31,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:31,807 INFO L85 PathProgramCache]: Analyzing trace with hash -840891144, now seen corresponding path program 1 times [2022-11-03 02:37:31,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:31,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868892107] [2022-11-03 02:37:31,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:31,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-03 02:37:35,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:35,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868892107] [2022-11-03 02:37:35,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868892107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:35,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:35,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:37:35,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907686281] [2022-11-03 02:37:35,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:35,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:37:35,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:35,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:37:35,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:37:35,623 INFO L87 Difference]: Start difference. First operand has 126 states, 65 states have (on average 1.2) internal successors, (78), 66 states have internal predecessors, (78), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:37:37,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:37,440 INFO L93 Difference]: Finished difference Result 221 states and 323 transitions. [2022-11-03 02:37:37,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:37:37,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 82 [2022-11-03 02:37:37,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:37,457 INFO L225 Difference]: With dead ends: 221 [2022-11-03 02:37:37,458 INFO L226 Difference]: Without dead ends: 127 [2022-11-03 02:37:37,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:37:37,467 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 4 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:37,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 457 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 02:37:37,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-03 02:37:37,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-11-03 02:37:37,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 68 states have internal predecessors, (80), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-11-03 02:37:37,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 176 transitions. [2022-11-03 02:37:37,536 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 176 transitions. Word has length 82 [2022-11-03 02:37:37,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:37,537 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 176 transitions. [2022-11-03 02:37:37,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:37:37,538 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 176 transitions. [2022-11-03 02:37:37,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 02:37:37,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:37,542 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:37,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:37:37,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:37,543 INFO L85 PathProgramCache]: Analyzing trace with hash 621684493, now seen corresponding path program 1 times [2022-11-03 02:37:37,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:37,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845721390] [2022-11-03 02:37:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:37,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 02:37:41,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:41,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845721390] [2022-11-03 02:37:41,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845721390] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:37:41,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202996379] [2022-11-03 02:37:41,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:41,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:41,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:41,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:41,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:37:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:42,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 2916 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:37:42,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-03 02:37:42,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-03 02:37:43,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202996379] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:37:43,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:37:43,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 5] total 14 [2022-11-03 02:37:43,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334672358] [2022-11-03 02:37:43,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:43,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:37:43,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:43,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:37:43,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:37:43,052 INFO L87 Difference]: Start difference. First operand 127 states and 176 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:37:44,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:44,480 INFO L93 Difference]: Finished difference Result 226 states and 318 transitions. [2022-11-03 02:37:44,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:37:44,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 83 [2022-11-03 02:37:44,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:44,484 INFO L225 Difference]: With dead ends: 226 [2022-11-03 02:37:44,484 INFO L226 Difference]: Without dead ends: 132 [2022-11-03 02:37:44,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:37:44,487 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 4 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:44,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 303 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 02:37:44,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-03 02:37:44,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2022-11-03 02:37:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 70 states have internal predecessors, (83), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-11-03 02:37:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 179 transitions. [2022-11-03 02:37:44,522 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 179 transitions. Word has length 83 [2022-11-03 02:37:44,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:44,523 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 179 transitions. [2022-11-03 02:37:44,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:37:44,524 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 179 transitions. [2022-11-03 02:37:44,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 02:37:44,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:44,531 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:44,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:44,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-03 02:37:44,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:44,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:44,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1862832934, now seen corresponding path program 1 times [2022-11-03 02:37:44,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:44,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909381140] [2022-11-03 02:37:44,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:44,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 02:37:46,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:46,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909381140] [2022-11-03 02:37:46,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909381140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:37:46,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354764219] [2022-11-03 02:37:46,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:46,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:46,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:46,674 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:46,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:37:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:47,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 2939 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-03 02:37:47,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:48,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:48,049 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:48,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:49,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:49,707 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:37:49,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 [2022-11-03 02:37:49,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:49,723 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:37:49,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 [2022-11-03 02:37:49,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 9 [2022-11-03 02:37:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 02:37:49,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:37:49,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354764219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:49,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:37:49,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2022-11-03 02:37:49,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620487261] [2022-11-03 02:37:49,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:49,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:37:49,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:49,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:37:49,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:37:49,982 INFO L87 Difference]: Start difference. First operand 130 states and 179 transitions. Second operand has 12 states, 7 states have (on average 4.714285714285714) internal successors, (33), 9 states have internal predecessors, (33), 7 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-03 02:37:54,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:54,049 INFO L93 Difference]: Finished difference Result 242 states and 334 transitions. [2022-11-03 02:37:54,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:37:54,051 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 7 states have (on average 4.714285714285714) internal successors, (33), 9 states have internal predecessors, (33), 7 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) Word has length 84 [2022-11-03 02:37:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:54,055 INFO L225 Difference]: With dead ends: 242 [2022-11-03 02:37:54,058 INFO L226 Difference]: Without dead ends: 130 [2022-11-03 02:37:54,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:37:54,064 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 71 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:54,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 770 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 336 Invalid, 0 Unknown, 117 Unchecked, 3.8s Time] [2022-11-03 02:37:54,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-03 02:37:54,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-11-03 02:37:54,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 70 states have internal predecessors, (82), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-11-03 02:37:54,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 178 transitions. [2022-11-03 02:37:54,114 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 178 transitions. Word has length 84 [2022-11-03 02:37:54,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:54,115 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 178 transitions. [2022-11-03 02:37:54,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 7 states have (on average 4.714285714285714) internal successors, (33), 9 states have internal predecessors, (33), 7 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-03 02:37:54,116 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 178 transitions. [2022-11-03 02:37:54,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 02:37:54,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:54,125 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:54,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:54,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:54,338 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:54,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:54,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1064019776, now seen corresponding path program 1 times [2022-11-03 02:37:54,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:54,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73020843] [2022-11-03 02:37:54,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:54,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-03 02:37:57,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:57,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73020843] [2022-11-03 02:37:57,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73020843] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:37:57,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469065854] [2022-11-03 02:37:57,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:57,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:57,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:57,670 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:57,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba517854-8280-4c7e-bda2-0b13910614a9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:37:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:58,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 2974 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-03 02:37:58,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:59,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:59,112 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:01,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 8 [2022-11-03 02:38:01,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 9 [2022-11-03 02:38:01,969 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 02:38:01,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:04,485 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-11-03 02:38:23,533 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.