./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9 --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 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab --- 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-6b4ec56 [2022-11-20 21:11:30,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:11:30,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:11:30,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:11:30,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:11:30,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:11:30,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:11:30,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:11:30,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:11:30,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:11:30,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:11:30,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:11:30,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:11:30,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:11:30,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:11:30,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:11:30,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:11:30,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:11:30,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:11:30,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:11:30,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:11:30,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:11:30,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:11:30,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:11:30,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:11:30,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:11:30,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:11:30,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:11:30,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:11:30,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:11:30,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:11:30,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:11:30,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:11:30,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:11:30,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:11:30,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:11:30,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:11:30,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:11:30,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:11:30,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:11:30,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:11:30,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 21:11:30,181 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:11:30,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:11:30,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:11:30,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:11:30,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:11:30,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:11:30,203 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:11:30,203 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:11:30,204 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:11:30,204 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:11:30,204 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:11:30,204 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:11:30,205 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:11:30,205 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:11:30,205 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:11:30,205 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:11:30,205 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:11:30,206 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:11:30,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:11:30,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:11:30,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:11:30,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:11:30,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:11:30,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:11:30,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:11:30,208 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:11:30,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:11:30,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:11:30,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:11:30,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:11:30,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:11:30,209 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:11:30,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:11:30,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:11:30,210 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:11:30,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:11:30,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:11:30,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:11:30,210 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_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab [2022-11-20 21:11:30,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:11:30,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:11:30,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:11:30,501 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:11:30,501 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:11:30,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2022-11-20 21:11:33,528 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:11:34,103 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:11:34,103 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2022-11-20 21:11:34,152 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9/data/d53ef8d7a/7cf63d6a09ee448b8ac64511b9ef1862/FLAG93dc23bba [2022-11-20 21:11:34,170 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9/data/d53ef8d7a/7cf63d6a09ee448b8ac64511b9ef1862 [2022-11-20 21:11:34,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:11:34,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:11:34,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:11:34,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:11:34,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:11:34,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:11:34" (1/1) ... [2022-11-20 21:11:34,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6699878b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:34, skipping insertion in model container [2022-11-20 21:11:34,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:11:34" (1/1) ... [2022-11-20 21:11:34,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:11:34,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:11:34,597 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_d26b00d3-dcf1-421b-9579-9d491bad8ab5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2022-11-20 21:11:34,606 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_d26b00d3-dcf1-421b-9579-9d491bad8ab5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2022-11-20 21:11:35,740 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:35,740 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:35,741 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:35,742 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:35,743 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:35,758 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:35,759 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:35,761 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:35,762 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:36,304 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 21:11:36,306 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 21:11:36,307 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 21:11:36,311 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 21:11:36,318 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 21:11:36,319 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 21:11:36,324 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 21:11:36,325 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 21:11:36,326 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 21:11:36,327 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 21:11:36,546 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 21:11:36,793 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:36,794 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:36,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:11:36,977 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:11:37,006 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_d26b00d3-dcf1-421b-9579-9d491bad8ab5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2022-11-20 21:11:37,008 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_d26b00d3-dcf1-421b-9579-9d491bad8ab5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2022-11-20 21:11:37,062 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:37,062 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:37,063 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:37,063 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:37,064 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:37,076 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:37,077 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:37,081 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:37,082 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:37,139 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 21:11:37,141 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 21:11:37,141 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 21:11:37,143 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 21:11:37,144 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 21:11:37,144 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 21:11:37,145 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 21:11:37,148 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 21:11:37,149 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 21:11:37,149 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 21:11:37,184 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 21:11:37,273 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:37,274 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 21:11:37,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:11:37,545 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:11:37,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:37 WrapperNode [2022-11-20 21:11:37,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:11:37,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:11:37,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:11:37,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:11:37,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:37" (1/1) ... [2022-11-20 21:11:37,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:37" (1/1) ... [2022-11-20 21:11:37,746 INFO L138 Inliner]: procedures = 690, calls = 2638, calls flagged for inlining = 61, calls inlined = 9, statements flattened = 867 [2022-11-20 21:11:37,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:11:37,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:11:37,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:11:37,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:11:37,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:37" (1/1) ... [2022-11-20 21:11:37,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:37" (1/1) ... [2022-11-20 21:11:37,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:37" (1/1) ... [2022-11-20 21:11:37,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:37" (1/1) ... [2022-11-20 21:11:37,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:37" (1/1) ... [2022-11-20 21:11:37,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:37" (1/1) ... [2022-11-20 21:11:37,838 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:37" (1/1) ... [2022-11-20 21:11:37,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:37" (1/1) ... [2022-11-20 21:11:37,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:11:37,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:11:37,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:11:37,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:11:37,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:37" (1/1) ... [2022-11-20 21:11:37,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:11:37,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:11:37,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:11:37,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:11:37,967 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-20 21:11:37,968 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-20 21:11:37,968 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-20 21:11:37,969 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-20 21:11:37,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 21:11:37,969 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-20 21:11:37,970 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-20 21:11:37,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 21:11:37,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 21:11:37,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 21:11:37,971 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_from_buf [2022-11-20 21:11:37,971 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_from_buf [2022-11-20 21:11:37,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 21:11:37,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:11:37,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 21:11:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:11:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:11:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 21:11:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 21:11:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-20 21:11:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-20 21:11:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 21:11:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 21:11:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 21:11:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 21:11:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 21:11:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-20 21:11:37,975 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-20 21:11:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-20 21:11:37,976 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-20 21:11:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 21:11:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 21:11:38,318 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:11:38,321 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:11:39,786 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:11:40,231 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:11:40,231 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 21:11:40,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:11:40 BoogieIcfgContainer [2022-11-20 21:11:40,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:11:40,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:11:40,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:11:40,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:11:40,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:11:34" (1/3) ... [2022-11-20 21:11:40,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc9994d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:11:40, skipping insertion in model container [2022-11-20 21:11:40,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:37" (2/3) ... [2022-11-20 21:11:40,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc9994d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:11:40, skipping insertion in model container [2022-11-20 21:11:40,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:11:40" (3/3) ... [2022-11-20 21:11:40,246 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_buf_harness.i [2022-11-20 21:11:40,266 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:11:40,266 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 21:11:40,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:11:40,341 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;@bb1dd07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:11:40,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 21:11:40,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 48 states have (on average 1.1875) internal successors, (57), 49 states have internal predecessors, (57), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-20 21:11:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 21:11:40,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:11:40,356 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] [2022-11-20 21:11:40,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:11:40,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:11:40,364 INFO L85 PathProgramCache]: Analyzing trace with hash 2075530696, now seen corresponding path program 1 times [2022-11-20 21:11:40,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:11:40,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200409303] [2022-11-20 21:11:40,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:11:40,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:11:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:11:47,656 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 21:11:47,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:11:47,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200409303] [2022-11-20 21:11:47,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200409303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:11:47,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:11:47,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-20 21:11:47,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422229980] [2022-11-20 21:11:47,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:11:47,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 21:11:47,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:11:47,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 21:11:47,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-20 21:11:47,695 INFO L87 Difference]: Start difference. First operand has 88 states, 48 states have (on average 1.1875) internal successors, (57), 49 states have internal predecessors, (57), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-20 21:11:49,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:11:49,299 INFO L93 Difference]: Finished difference Result 191 states and 276 transitions. [2022-11-20 21:11:49,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 21:11:49,302 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 43 [2022-11-20 21:11:49,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:11:49,311 INFO L225 Difference]: With dead ends: 191 [2022-11-20 21:11:49,312 INFO L226 Difference]: Without dead ends: 128 [2022-11-20 21:11:49,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2022-11-20 21:11:49,318 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 91 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:11:49,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 845 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 21:11:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-20 21:11:49,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 98. [2022-11-20 21:11:49,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 54 states have internal predecessors, (58), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-20 21:11:49,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2022-11-20 21:11:49,380 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 43 [2022-11-20 21:11:49,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:11:49,380 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions. [2022-11-20 21:11:49,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-20 21:11:49,381 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions. [2022-11-20 21:11:49,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 21:11:49,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:11:49,383 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 21:11:49,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:11:49,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:11:49,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:11:49,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1091548635, now seen corresponding path program 1 times [2022-11-20 21:11:49,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:11:49,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363933540] [2022-11-20 21:11:49,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:11:49,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:11:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:11:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 21:11:58,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:11:58,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363933540] [2022-11-20 21:11:58,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363933540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:11:58,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:11:58,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 21:11:58,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304507549] [2022-11-20 21:11:58,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:11:58,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 21:11:58,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:11:58,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 21:11:58,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2022-11-20 21:11:58,786 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 10 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-20 21:12:00,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:00,860 INFO L93 Difference]: Finished difference Result 134 states and 173 transitions. [2022-11-20 21:12:00,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 21:12:00,861 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 10 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 47 [2022-11-20 21:12:00,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:00,867 INFO L225 Difference]: With dead ends: 134 [2022-11-20 21:12:00,868 INFO L226 Difference]: Without dead ends: 132 [2022-11-20 21:12:00,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2022-11-20 21:12:00,872 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 73 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:00,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 896 Invalid, 1823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 21:12:00,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-20 21:12:00,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 88. [2022-11-20 21:12:00,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 48 states have (on average 1.125) internal successors, (54), 49 states have internal predecessors, (54), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-20 21:12:00,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2022-11-20 21:12:00,913 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 47 [2022-11-20 21:12:00,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:00,915 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2022-11-20 21:12:00,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 10 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-20 21:12:00,916 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2022-11-20 21:12:00,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 21:12:00,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:00,921 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-20 21:12:00,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:12:00,922 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:12:00,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:00,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1403934463, now seen corresponding path program 1 times [2022-11-20 21:12:00,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:00,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909369279] [2022-11-20 21:12:00,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:00,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 21:12:14,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:14,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909369279] [2022-11-20 21:12:14,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909369279] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:12:14,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676171205] [2022-11-20 21:12:14,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:14,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:14,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:12:14,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:12:14,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26b00d3-dcf1-421b-9579-9d491bad8ab5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 21:12:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:15,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 2603 conjuncts, 130 conjunts are in the unsatisfiable core [2022-11-20 21:12:15,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:12:15,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:12:15,578 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 [2022-11-20 21:12:19,614 INFO L321 Elim1Store]: treesize reduction 89, result has 27.6 percent of original size [2022-11-20 21:12:19,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 94 [2022-11-20 21:12:19,656 INFO L321 Elim1Store]: treesize reduction 55, result has 25.7 percent of original size [2022-11-20 21:12:19,656 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 1 case distinctions, treesize of input 20 treesize of output 34 [2022-11-20 21:12:19,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-20 21:12:19,733 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:12:19,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:19,774 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 25 [2022-11-20 21:12:19,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2022-11-20 21:12:19,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-11-20 21:12:19,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-20 21:12:21,562 INFO L321 Elim1Store]: treesize reduction 55, result has 25.7 percent of original size [2022-11-20 21:12:21,563 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 1 case distinctions, treesize of input 20 treesize of output 34 [2022-11-20 21:12:21,658 INFO L321 Elim1Store]: treesize reduction 89, result has 27.6 percent of original size [2022-11-20 21:12:21,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 94 [2022-11-20 21:12:21,706 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-20 21:12:21,706 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 2 case distinctions, treesize of input 53 treesize of output 54 [2022-11-20 21:12:21,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-20 21:12:21,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:21,757 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:21,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2022-11-20 21:12:21,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 7 [2022-11-20 21:12:21,953 INFO L321 Elim1Store]: treesize reduction 55, result has 25.7 percent of original size [2022-11-20 21:12:21,953 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 1 case distinctions, treesize of input 20 treesize of output 34 [2022-11-20 21:12:22,030 INFO L321 Elim1Store]: treesize reduction 89, result has 27.6 percent of original size [2022-11-20 21:12:22,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 94 [2022-11-20 21:12:22,092 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-20 21:12:22,092 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 2 case distinctions, treesize of input 53 treesize of output 54 [2022-11-20 21:12:22,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-20 21:12:22,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:22,148 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:22,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2022-11-20 21:12:22,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 7 [2022-11-20 21:12:22,338 INFO L321 Elim1Store]: treesize reduction 55, result has 25.7 percent of original size [2022-11-20 21:12:22,338 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 1 case distinctions, treesize of input 20 treesize of output 34 [2022-11-20 21:12:22,427 INFO L321 Elim1Store]: treesize reduction 89, result has 27.6 percent of original size [2022-11-20 21:12:22,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 94 [2022-11-20 21:12:22,498 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-20 21:12:22,498 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 2 case distinctions, treesize of input 53 treesize of output 54 [2022-11-20 21:12:22,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-20 21:12:22,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:22,575 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:22,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2022-11-20 21:12:22,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 7 [2022-11-20 21:12:22,742 INFO L321 Elim1Store]: treesize reduction 55, result has 25.7 percent of original size [2022-11-20 21:12:22,742 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 1 case distinctions, treesize of input 20 treesize of output 34 [2022-11-20 21:12:22,828 INFO L321 Elim1Store]: treesize reduction 89, result has 27.6 percent of original size [2022-11-20 21:12:22,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 94 [2022-11-20 21:12:22,874 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-20 21:12:22,875 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 2 case distinctions, treesize of input 53 treesize of output 54 [2022-11-20 21:12:22,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-20 21:12:22,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:22,923 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:22,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2022-11-20 21:12:22,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 7 [2022-11-20 21:12:23,422 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_old(#memory_$Pointer$.base)| |c_aws_byte_cursor_from_buf_#in~buf.base|) (+ |c_aws_byte_cursor_from_buf_#in~buf.offset| 8)))) (or (exists ((v_ArrVal_200 Int) (|aws_byte_cursor_from_buf_~#cur~0.base| Int) (v_ArrVal_197 Int)) (and (not (= (select (select |c_#memory_$Pointer$.base| |aws_byte_cursor_from_buf_~#cur~0.base|) 8) 0)) (= (store |c_old(#memory_$Pointer$.base)| |aws_byte_cursor_from_buf_~#cur~0.base| (store (store (select |c_old(#memory_$Pointer$.base)| |aws_byte_cursor_from_buf_~#cur~0.base|) 8 .cse0) 0 v_ArrVal_197)) |c_#memory_$Pointer$.base|) (not (= |aws_byte_cursor_from_buf_~#cur~0.base| 0)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_byte_cursor_from_buf_~#cur~0.base| (let ((.cse1 (store (select |c_old(#memory_int)| |aws_byte_cursor_from_buf_~#cur~0.base|) 8 v_ArrVal_200))) (store .cse1 0 (select (select (store |c_old(#memory_int)| |aws_byte_cursor_from_buf_~#cur~0.base| .cse1) |c_aws_byte_cursor_from_buf_#in~buf.base|) |c_aws_byte_cursor_from_buf_#in~buf.offset|))))))) (exists ((v_ArrVal_200 Int) (|aws_byte_cursor_from_buf_~#cur~0.base| Int) (v_ArrVal_197 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_byte_cursor_from_buf_~#cur~0.base| (store (store (select |c_old(#memory_$Pointer$.base)| |aws_byte_cursor_from_buf_~#cur~0.base|) 8 .cse0) 0 v_ArrVal_197)) |c_#memory_$Pointer$.base|) (not (= |aws_byte_cursor_from_buf_~#cur~0.base| 0)) (= (mod (select (select |c_#memory_int| |aws_byte_cursor_from_buf_~#cur~0.base|) 0) 18446744073709551616) 0) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_byte_cursor_from_buf_~#cur~0.base| (let ((.cse2 (store (select |c_old(#memory_int)| |aws_byte_cursor_from_buf_~#cur~0.base|) 8 v_ArrVal_200))) (store .cse2 0 (select (select (store |c_old(#memory_int)| |aws_byte_cursor_from_buf_~#cur~0.base| .cse2) |c_aws_byte_cursor_from_buf_#in~buf.base|) |c_aws_byte_cursor_from_buf_#in~buf.offset|))))))) (exists ((v_ArrVal_200 Int) (|aws_byte_cursor_from_buf_~#cur~0.base| Int) (v_ArrVal_197 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_byte_cursor_from_buf_~#cur~0.base| (store (store (select |c_old(#memory_$Pointer$.base)| |aws_byte_cursor_from_buf_~#cur~0.base|) 8 .cse0) 0 v_ArrVal_197)) |c_#memory_$Pointer$.base|) (not (= (select (select |c_#memory_$Pointer$.offset| |aws_byte_cursor_from_buf_~#cur~0.base|) 8) 0)) (not (= |aws_byte_cursor_from_buf_~#cur~0.base| 0)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_byte_cursor_from_buf_~#cur~0.base| (let ((.cse3 (store (select |c_old(#memory_int)| |aws_byte_cursor_from_buf_~#cur~0.base|) 8 v_ArrVal_200))) (store .cse3 0 (select (select (store |c_old(#memory_int)| |aws_byte_cursor_from_buf_~#cur~0.base| .cse3) |c_aws_byte_cursor_from_buf_#in~buf.base|) |c_aws_byte_cursor_from_buf_#in~buf.offset|))))))))) is different from true [2022-11-20 21:12:23,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:23,745 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-20 21:12:23,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 190 treesize of output 241 [2022-11-20 21:12:23,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:23,840 INFO L321 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2022-11-20 21:12:23,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 201 [2022-11-20 21:12:24,466 INFO L321 Elim1Store]: treesize reduction 78, result has 29.7 percent of original size [2022-11-20 21:12:24,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 106 treesize of output 121 [2022-11-20 21:12:24,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 7 [2022-11-20 21:12:24,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 57 treesize of output 37 [2022-11-20 21:12:24,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 57 treesize of output 37 [2022-11-20 21:12:24,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 57 treesize of output 37 [2022-11-20 21:12:24,929 INFO L321 Elim1Store]: treesize reduction 78, result has 29.7 percent of original size [2022-11-20 21:12:24,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 106 treesize of output 121 [2022-11-20 21:12:24,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 7 [2022-11-20 21:12:24,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 57 treesize of output 37 [2022-11-20 21:12:25,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 57 treesize of output 37 [2022-11-20 21:12:25,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 57 treesize of output 37 [2022-11-20 21:12:25,487 INFO L321 Elim1Store]: treesize reduction 98, result has 28.5 percent of original size [2022-11-20 21:12:25,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 74 treesize of output 99 [2022-11-20 21:12:25,714 INFO L321 Elim1Store]: treesize reduction 112, result has 22.8 percent of original size [2022-11-20 21:12:25,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 648 treesize of output 645 [2022-11-20 21:12:26,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:26,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 443 treesize of output 421 [2022-11-20 21:12:27,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:27,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 105 [2022-11-20 21:12:27,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:27,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 105 [2022-11-20 21:12:27,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:27,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 281 [2022-11-20 21:12:27,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:27,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 128 [2022-11-20 21:12:27,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:27,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 128 [2022-11-20 21:12:27,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:27,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2022-11-20 21:12:28,006 INFO L321 Elim1Store]: treesize reduction 39, result has 35.0 percent of original size [2022-11-20 21:12:28,007 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 4 case distinctions, treesize of input 65 treesize of output 62 [2022-11-20 21:12:28,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 7 [2022-11-20 21:12:28,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 33 treesize of output 21 [2022-11-20 21:12:28,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 33 treesize of output 21 [2022-11-20 21:12:31,680 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:31,681 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 81 treesize of output 65 [2022-11-20 21:12:31,728 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:12:31,728 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 [2022-11-20 21:12:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:12:31,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:12:34,970 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-20 21:20:45,791 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.