./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V --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 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:36:17,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:36:17,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:36:17,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:36:17,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:36:17,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:36:17,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:36:17,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:36:17,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:36:17,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:36:17,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:36:17,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:36:17,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:36:17,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:36:17,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:36:17,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:36:17,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:36:17,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:36:17,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:36:17,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:36:17,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:36:17,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:36:17,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:36:17,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:36:17,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:36:17,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:36:17,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:36:17,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:36:17,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:36:17,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:36:17,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:36:17,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:36:17,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:36:17,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:36:17,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:36:17,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:36:17,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:36:17,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:36:17,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:36:17,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:36:17,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:36:17,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:36:17,804 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:36:17,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:36:17,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:36:17,808 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:36:17,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:36:17,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:36:17,810 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:36:17,810 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:36:17,810 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:36:17,811 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:36:17,812 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:36:17,812 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:36:17,812 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:36:17,813 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:36:17,813 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:36:17,813 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:36:17,813 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:36:17,814 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:36:17,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:36:17,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:36:17,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:36:17,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:36:17,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:36:17,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:36:17,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:36:17,817 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:36:17,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:36:17,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:36:17,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:36:17,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:36:17,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:36:17,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:36:17,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:36:17,821 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:36:17,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:36:17,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:36:17,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:36:17,822 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:36:17,822 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 [2021-11-23 03:36:18,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:36:18,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:36:18,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:36:18,129 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:36:18,130 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:36:18,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2021-11-23 03:36:18,218 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/data/06116b447/c2db2dcc479f4b14996e95464364c8ce/FLAG51635c9f5 [2021-11-23 03:36:19,049 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:36:19,050 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2021-11-23 03:36:19,094 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/data/06116b447/c2db2dcc479f4b14996e95464364c8ce/FLAG51635c9f5 [2021-11-23 03:36:19,536 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/data/06116b447/c2db2dcc479f4b14996e95464364c8ce [2021-11-23 03:36:19,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:36:19,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:36:19,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:36:19,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:36:19,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:36:19,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:19" (1/1) ... [2021-11-23 03:36:19,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a31728d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:19, skipping insertion in model container [2021-11-23 03:36:19,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:19" (1/1) ... [2021-11-23 03:36:19,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:36:19,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:36:19,992 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_793be3c9-5790-4120-967f-19efd0893f7d/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2021-11-23 03:36:20,000 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_793be3c9-5790-4120-967f-19efd0893f7d/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2021-11-23 03:36:21,028 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:21,029 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:21,030 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:21,031 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:21,032 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:21,048 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:21,049 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:21,051 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:21,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:21,481 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:36:21,483 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:36:21,484 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:36:21,485 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:36:21,487 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:36:21,488 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:36:21,489 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:36:21,490 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:36:21,491 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:36:21,491 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:36:21,731 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:36:21,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:21,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:22,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:36:22,077 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:36:22,092 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_793be3c9-5790-4120-967f-19efd0893f7d/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2021-11-23 03:36:22,092 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_793be3c9-5790-4120-967f-19efd0893f7d/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2021-11-23 03:36:22,144 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:22,144 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:22,145 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:22,145 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:22,146 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:22,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:22,160 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:22,161 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:22,161 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:22,215 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:36:22,216 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:36:22,217 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:36:22,217 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:36:22,219 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:36:22,219 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:36:22,220 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:36:22,220 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:36:22,220 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:36:22,221 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:36:22,253 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:36:22,332 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:22,332 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:36:22,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:36:22,746 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:36:22,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:22 WrapperNode [2021-11-23 03:36:22,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:36:22,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:36:22,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:36:22,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:36:22,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:22" (1/1) ... [2021-11-23 03:36:22,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:22" (1/1) ... [2021-11-23 03:36:23,034 INFO L137 Inliner]: procedures = 691, calls = 2677, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 972 [2021-11-23 03:36:23,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:36:23,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:36:23,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:36:23,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:36:23,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:22" (1/1) ... [2021-11-23 03:36:23,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:22" (1/1) ... [2021-11-23 03:36:23,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:22" (1/1) ... [2021-11-23 03:36:23,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:22" (1/1) ... [2021-11-23 03:36:23,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:22" (1/1) ... [2021-11-23 03:36:23,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:22" (1/1) ... [2021-11-23 03:36:23,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:22" (1/1) ... [2021-11-23 03:36:23,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:36:23,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:36:23,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:36:23,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:36:23,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:22" (1/1) ... [2021-11-23 03:36:23,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:36:23,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:36:23,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:36:23,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:36:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-23 03:36:23,267 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-23 03:36:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:36:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 03:36:23,269 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 03:36:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:36:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:36:23,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:36:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:36:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:36:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:36:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2021-11-23 03:36:23,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2021-11-23 03:36:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:36:23,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:36:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 03:36:23,272 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 03:36:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-23 03:36:23,273 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-23 03:36:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:36:23,273 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:36:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:36:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:36:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:36:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-23 03:36:23,275 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-23 03:36:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2021-11-23 03:36:23,276 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2021-11-23 03:36:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:36:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-23 03:36:23,276 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-23 03:36:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-23 03:36:23,277 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-23 03:36:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:36:23,624 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:36:23,632 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:36:25,063 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:36:25,271 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:36:25,271 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 03:36:25,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:25 BoogieIcfgContainer [2021-11-23 03:36:25,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:36:25,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:36:25,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:36:25,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:36:25,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:36:19" (1/3) ... [2021-11-23 03:36:25,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cca325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:25, skipping insertion in model container [2021-11-23 03:36:25,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:22" (2/3) ... [2021-11-23 03:36:25,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cca325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:25, skipping insertion in model container [2021-11-23 03:36:25,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:25" (3/3) ... [2021-11-23 03:36:25,284 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_advance_harness.i [2021-11-23 03:36:25,290 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:36:25,290 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:36:25,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:36:25,350 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:36:25,350 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:36:25,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-11-23 03:36:25,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 03:36:25,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:25,381 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:25,382 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:25,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:25,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1776087851, now seen corresponding path program 1 times [2021-11-23 03:36:25,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:25,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110846077] [2021-11-23 03:36:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:25,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-23 03:36:26,120 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:26,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110846077] [2021-11-23 03:36:26,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110846077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:26,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:26,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:36:26,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361448162] [2021-11-23 03:36:26,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:26,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:36:26,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:26,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:36:26,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:36:26,177 INFO L87 Difference]: Start difference. First operand has 140 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 03:36:26,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:26,363 INFO L93 Difference]: Finished difference Result 228 states and 344 transitions. [2021-11-23 03:36:26,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:36:26,366 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 61 [2021-11-23 03:36:26,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:26,376 INFO L225 Difference]: With dead ends: 228 [2021-11-23 03:36:26,376 INFO L226 Difference]: Without dead ends: 138 [2021-11-23 03:36:26,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:36:26,384 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:26,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 178 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:36:26,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-23 03:36:26,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-11-23 03:36:26,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 72 states have internal predecessors, (83), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-11-23 03:36:26,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 192 transitions. [2021-11-23 03:36:26,441 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 192 transitions. Word has length 61 [2021-11-23 03:36:26,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:26,443 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 192 transitions. [2021-11-23 03:36:26,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 03:36:26,443 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 192 transitions. [2021-11-23 03:36:26,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 03:36:26,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:26,447 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:26,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:36:26,448 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:26,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:26,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1392633959, now seen corresponding path program 1 times [2021-11-23 03:36:26,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:26,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756447470] [2021-11-23 03:36:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:26,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:31,056 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-23 03:36:31,056 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:31,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756447470] [2021-11-23 03:36:31,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756447470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:31,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:31,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-23 03:36:31,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107355366] [2021-11-23 03:36:31,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:31,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:36:31,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:31,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:36:31,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:36:31,060 INFO L87 Difference]: Start difference. First operand 138 states and 192 transitions. Second operand has 16 states, 11 states have (on average 2.272727272727273) internal successors, (25), 13 states have internal predecessors, (25), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-23 03:36:34,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:34,294 INFO L93 Difference]: Finished difference Result 210 states and 300 transitions. [2021-11-23 03:36:34,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 03:36:34,295 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 2.272727272727273) internal successors, (25), 13 states have internal predecessors, (25), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) Word has length 64 [2021-11-23 03:36:34,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:34,300 INFO L225 Difference]: With dead ends: 210 [2021-11-23 03:36:34,300 INFO L226 Difference]: Without dead ends: 208 [2021-11-23 03:36:34,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2021-11-23 03:36:34,303 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 114 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:34,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 2273 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 03:36:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-23 03:36:34,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 156. [2021-11-23 03:36:34,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 83 states have internal predecessors, (95), 62 states have call successors, (62), 12 states have call predecessors, (62), 12 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2021-11-23 03:36:34,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 218 transitions. [2021-11-23 03:36:34,337 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 218 transitions. Word has length 64 [2021-11-23 03:36:34,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:34,338 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 218 transitions. [2021-11-23 03:36:34,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 2.272727272727273) internal successors, (25), 13 states have internal predecessors, (25), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-23 03:36:34,339 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 218 transitions. [2021-11-23 03:36:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 03:36:34,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:34,342 INFO L514 BasicCegarLoop]: trace histogram [7, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:34,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:36:34,343 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:34,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:34,344 INFO L85 PathProgramCache]: Analyzing trace with hash 621632771, now seen corresponding path program 1 times [2021-11-23 03:36:34,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:34,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727515679] [2021-11-23 03:36:34,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:34,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-23 03:36:39,157 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:39,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727515679] [2021-11-23 03:36:39,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727515679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:39,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:39,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-23 03:36:39,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367895432] [2021-11-23 03:36:39,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:39,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 03:36:39,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:39,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 03:36:39,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:36:39,160 INFO L87 Difference]: Start difference. First operand 156 states and 218 transitions. Second operand has 19 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 16 states have internal predecessors, (26), 9 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-23 03:36:44,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:44,479 INFO L93 Difference]: Finished difference Result 282 states and 408 transitions. [2021-11-23 03:36:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 03:36:44,484 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 16 states have internal predecessors, (26), 9 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) Word has length 68 [2021-11-23 03:36:44,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:44,488 INFO L225 Difference]: With dead ends: 282 [2021-11-23 03:36:44,488 INFO L226 Difference]: Without dead ends: 280 [2021-11-23 03:36:44,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2021-11-23 03:36:44,490 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 143 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 3229 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 3414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 3229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:44,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 2242 Invalid, 3414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 3229 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-23 03:36:44,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-23 03:36:44,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 158. [2021-11-23 03:36:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 82 states have (on average 1.170731707317073) internal successors, (96), 84 states have internal predecessors, (96), 63 states have call successors, (63), 12 states have call predecessors, (63), 12 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2021-11-23 03:36:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 221 transitions. [2021-11-23 03:36:44,567 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 221 transitions. Word has length 68 [2021-11-23 03:36:44,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:44,568 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 221 transitions. [2021-11-23 03:36:44,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 16 states have internal predecessors, (26), 9 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-23 03:36:44,568 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 221 transitions. [2021-11-23 03:36:44,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 03:36:44,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:44,576 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:44,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:36:44,577 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:44,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:44,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2035128335, now seen corresponding path program 1 times [2021-11-23 03:36:44,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:44,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780426235] [2021-11-23 03:36:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:44,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-23 03:36:51,739 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:51,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780426235] [2021-11-23 03:36:51,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780426235] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:36:51,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516386800] [2021-11-23 03:36:51,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:51,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:36:51,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:36:51,750 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:36:51,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_793be3c9-5790-4120-967f-19efd0893f7d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:37:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:44,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 2650 conjuncts, 199 conjunts are in the unsatisfiable core [2021-11-23 03:37:44,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:37:44,644 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:37:44,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 03:37:45,723 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:37:45,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 17 [2021-11-23 03:37:46,100 INFO L388 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 19 treesize of output 1 [2021-11-23 03:37:46,418 INFO L388 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 27 treesize of output 23 [2021-11-23 03:37:48,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:48,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:48,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2021-11-23 03:37:48,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:48,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2021-11-23 03:37:53,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:53,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:53,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 60 [2021-11-23 03:37:53,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:53,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:53,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:53,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:53,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 48 [2021-11-23 03:37:53,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:53,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 68 [2021-11-23 03:37:53,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:53,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:53,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 53 [2021-11-23 03:37:53,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:53,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:53,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 65 treesize of output 52 [2021-11-23 03:37:54,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:54,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:37:54,247 INFO L354 Elim1Store]: treesize reduction 198, result has 17.8 percent of original size [2021-11-23 03:37:54,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 91 treesize of output 113 [2021-11-23 03:38:05,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 68 [2021-11-23 03:38:05,472 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:38:11,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:38:11,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:11,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:38:11,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:11,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:11,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:11,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:11,884 INFO L354 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2021-11-23 03:38:11,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 285 treesize of output 274 [2021-11-23 03:38:11,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:11,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:38:11,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:11,991 INFO L354 Elim1Store]: treesize reduction 164, result has 12.8 percent of original size [2021-11-23 03:38:11,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 271 treesize of output 247 [2021-11-23 03:38:12,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:12,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:12,042 INFO L354 Elim1Store]: treesize reduction 97, result has 8.5 percent of original size [2021-11-23 03:38:12,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 251 treesize of output 219 [2021-11-23 03:38:12,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:38:12,113 INFO L354 Elim1Store]: treesize reduction 122, result has 16.4 percent of original size [2021-11-23 03:38:12,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 232 treesize of output 215 [2021-11-23 03:38:12,170 INFO L354 Elim1Store]: treesize reduction 116, result has 12.8 percent of original size [2021-11-23 03:38:12,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 228 treesize of output 228 [2021-11-23 03:38:17,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:38:17,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:17,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:38:17,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:38:17,356 INFO L354 Elim1Store]: treesize reduction 212, result has 25.6 percent of original size [2021-11-23 03:38:17,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 24 case distinctions, treesize of input 497 treesize of output 361 [2021-11-23 03:38:17,516 INFO L354 Elim1Store]: treesize reduction 410, result has 8.5 percent of original size [2021-11-23 03:38:17,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 349 treesize of output 308 [2021-11-23 03:38:17,560 INFO L354 Elim1Store]: treesize reduction 63, result has 12.5 percent of original size [2021-11-23 03:38:17,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 278 treesize of output 252 [2021-11-23 03:38:17,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 55 [2021-11-23 03:38:22,074 INFO L354 Elim1Store]: treesize reduction 82, result has 43.4 percent of original size [2021-11-23 03:38:22,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 482 treesize of output 440 [2021-11-23 03:38:24,448 INFO L354 Elim1Store]: treesize reduction 80, result has 52.7 percent of original size [2021-11-23 03:38:24,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 428 treesize of output 412 [2021-11-23 03:38:24,792 INFO L388 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 592 treesize of output 576 [2021-11-23 03:39:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 03:39:39,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:39:41,558 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2021-11-23 03:47:20,778 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.