./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS --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 b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- 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-8393723 [2022-11-19 07:54:48,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:54:48,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:54:48,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:54:48,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:54:48,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:54:48,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:54:48,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:54:48,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:54:48,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:54:48,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:54:48,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:54:48,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:54:48,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:54:48,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:54:48,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:54:48,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:54:48,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:54:48,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:54:48,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:54:48,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:54:48,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:54:48,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:54:48,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:54:48,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:54:48,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:54:48,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:54:48,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:54:48,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:54:48,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:54:48,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:54:48,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:54:48,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:54:48,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:54:48,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:54:48,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:54:48,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:54:48,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:54:48,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:54:48,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:54:48,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:54:48,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:54:48,863 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:54:48,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:54:48,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:54:48,864 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:54:48,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:54:48,865 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:54:48,865 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:54:48,866 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:54:48,866 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:54:48,866 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:54:48,866 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:54:48,866 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:54:48,866 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:54:48,867 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:54:48,867 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:54:48,867 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:54:48,867 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:54:48,867 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:54:48,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:54:48,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:54:48,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:54:48,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:54:48,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:54:48,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:54:48,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:54:48,869 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:54:48,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:54:48,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:54:48,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:54:48,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:54:48,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:54:48,870 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:54:48,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:54:48,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:54:48,871 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:54:48,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:54:48,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:54:48,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:54:48,872 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_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2022-11-19 07:54:49,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:54:49,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:54:49,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:54:49,176 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:54:49,177 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:54:49,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2022-11-19 07:54:49,251 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/data/e426482bf/e9fb90bac6ed4fe28a3683106793d33c/FLAG219e2a2aa [2022-11-19 07:54:50,213 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:54:50,214 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2022-11-19 07:54:50,268 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/data/e426482bf/e9fb90bac6ed4fe28a3683106793d33c/FLAG219e2a2aa [2022-11-19 07:54:50,679 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/data/e426482bf/e9fb90bac6ed4fe28a3683106793d33c [2022-11-19 07:54:50,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:54:50,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:54:50,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:54:50,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:54:50,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:54:50,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:50" (1/1) ... [2022-11-19 07:54:50,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7d67f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:50, skipping insertion in model container [2022-11-19 07:54:50,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:50" (1/1) ... [2022-11-19 07:54:50,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:54:50,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:54:51,165 WARN L234 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_18177535-eeb2-42c0-9d77-23f24e949d1a/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2022-11-19 07:54:51,172 WARN L234 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_18177535-eeb2-42c0-9d77-23f24e949d1a/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2022-11-19 07:54:52,463 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:52,465 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:52,468 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:52,469 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:52,472 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:52,490 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:52,491 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:52,493 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:52,493 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:52,988 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 07:54:52,989 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 07:54:52,990 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 07:54:52,992 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 07:54:52,993 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 07:54:52,994 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 07:54:52,994 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 07:54:52,995 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 07:54:52,996 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 07:54:52,997 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 07:54:53,191 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 07:54:53,214 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,214 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,301 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,317 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:54:53,480 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:54:53,507 WARN L234 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_18177535-eeb2-42c0-9d77-23f24e949d1a/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2022-11-19 07:54:53,508 WARN L234 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_18177535-eeb2-42c0-9d77-23f24e949d1a/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2022-11-19 07:54:53,550 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,550 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,550 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,551 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,552 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,570 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,571 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,572 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,573 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,675 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 07:54:53,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 07:54:53,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 07:54:53,677 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 07:54:53,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 07:54:53,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 07:54:53,679 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 07:54:53,679 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 07:54:53,680 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 07:54:53,690 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 07:54:53,712 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 07:54:53,739 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,739 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,795 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,795 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:54:53,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:54:54,038 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:54:54,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:54 WrapperNode [2022-11-19 07:54:54,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:54:54,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:54:54,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:54:54,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:54:54,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:54" (1/1) ... [2022-11-19 07:54:54,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:54" (1/1) ... [2022-11-19 07:54:54,321 INFO L138 Inliner]: procedures = 691, calls = 2636, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1064 [2022-11-19 07:54:54,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:54:54,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:54:54,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:54:54,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:54:54,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:54" (1/1) ... [2022-11-19 07:54:54,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:54" (1/1) ... [2022-11-19 07:54:54,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:54" (1/1) ... [2022-11-19 07:54:54,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:54" (1/1) ... [2022-11-19 07:54:54,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:54" (1/1) ... [2022-11-19 07:54:54,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:54" (1/1) ... [2022-11-19 07:54:54,412 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:54" (1/1) ... [2022-11-19 07:54:54,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:54" (1/1) ... [2022-11-19 07:54:54,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:54:54,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:54:54,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:54:54,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:54:54,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:54" (1/1) ... [2022-11-19 07:54:54,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:54:54,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:54,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:54:54,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:54:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-19 07:54:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-19 07:54:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-19 07:54:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-19 07:54:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:54:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-19 07:54:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-19 07:54:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-19 07:54:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-19 07:54:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:54:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-19 07:54:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-19 07:54:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:54:54,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:54:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:54:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:54:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:54:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-19 07:54:54,523 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-19 07:54:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:54:54,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:54:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-19 07:54:54,524 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-19 07:54:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-19 07:54:54,525 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-19 07:54:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-19 07:54:54,525 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-19 07:54:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:54:54,525 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:54:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-19 07:54:54,525 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-19 07:54:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-19 07:54:54,526 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-19 07:54:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:54:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-19 07:54:54,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-19 07:54:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:54:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:54:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-19 07:54:54,527 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-19 07:54:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-19 07:54:54,528 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-19 07:54:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2022-11-19 07:54:54,529 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2022-11-19 07:54:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-19 07:54:54,529 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-19 07:54:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:54:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:54:54,944 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:54:54,946 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:54:56,685 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:54:57,035 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:54:57,035 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:54:57,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:57 BoogieIcfgContainer [2022-11-19 07:54:57,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:54:57,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:54:57,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:54:57,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:54:57,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:50" (1/3) ... [2022-11-19 07:54:57,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6541e6ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:57, skipping insertion in model container [2022-11-19 07:54:57,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:54" (2/3) ... [2022-11-19 07:54:57,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6541e6ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:57, skipping insertion in model container [2022-11-19 07:54:57,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:57" (3/3) ... [2022-11-19 07:54:57,057 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness.i [2022-11-19 07:54:57,077 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:54:57,078 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:54:57,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:54:57,215 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;@518523aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:54:57,216 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:54:57,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 103 states have internal predecessors, (123), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-19 07:54:57,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-19 07:54:57,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:57,241 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:57,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:54:57,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:57,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1899896275, now seen corresponding path program 1 times [2022-11-19 07:54:57,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:57,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985550784] [2022-11-19 07:54:57,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:57,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 07:54:58,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:58,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985550784] [2022-11-19 07:54:58,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985550784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:58,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:58,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:54:58,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886432117] [2022-11-19 07:54:58,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:58,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:54:58,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:58,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:54:58,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:54:58,087 INFO L87 Difference]: Start difference. First operand has 194 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 103 states have internal predecessors, (123), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-19 07:54:58,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:58,271 INFO L93 Difference]: Finished difference Result 363 states and 514 transitions. [2022-11-19 07:54:58,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:54:58,274 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 55 [2022-11-19 07:54:58,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:58,284 INFO L225 Difference]: With dead ends: 363 [2022-11-19 07:54:58,285 INFO L226 Difference]: Without dead ends: 192 [2022-11-19 07:54:58,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:54:58,297 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:58,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:54:58,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-19 07:54:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-19 07:54:58,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 102 states have internal predecessors, (119), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-19 07:54:58,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 262 transitions. [2022-11-19 07:54:58,372 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 262 transitions. Word has length 55 [2022-11-19 07:54:58,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:58,373 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 262 transitions. [2022-11-19 07:54:58,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-19 07:54:58,374 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 262 transitions. [2022-11-19 07:54:58,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-19 07:54:58,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:58,376 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:58,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:54:58,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:54:58,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:58,378 INFO L85 PathProgramCache]: Analyzing trace with hash 974803453, now seen corresponding path program 1 times [2022-11-19 07:54:58,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:58,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673949] [2022-11-19 07:54:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:58,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 07:55:04,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:55:04,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673949] [2022-11-19 07:55:04,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:04,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:04,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 07:55:04,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150939976] [2022-11-19 07:55:04,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:04,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:55:04,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:55:04,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:55:04,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:55:04,427 INFO L87 Difference]: Start difference. First operand 192 states and 262 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 7 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-19 07:55:06,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:06,335 INFO L93 Difference]: Finished difference Result 398 states and 545 transitions. [2022-11-19 07:55:06,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:55:06,336 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 7 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 57 [2022-11-19 07:55:06,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:06,338 INFO L225 Difference]: With dead ends: 398 [2022-11-19 07:55:06,338 INFO L226 Difference]: Without dead ends: 235 [2022-11-19 07:55:06,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:55:06,340 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 143 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:06,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1133 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-19 07:55:06,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-19 07:55:06,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 214. [2022-11-19 07:55:06,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 112 states have (on average 1.1696428571428572) internal successors, (131), 113 states have internal predecessors, (131), 83 states have call successors, (83), 18 states have call predecessors, (83), 18 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-11-19 07:55:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 296 transitions. [2022-11-19 07:55:06,375 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 296 transitions. Word has length 57 [2022-11-19 07:55:06,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:06,375 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 296 transitions. [2022-11-19 07:55:06,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 7 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-19 07:55:06,376 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 296 transitions. [2022-11-19 07:55:06,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-19 07:55:06,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:06,378 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:06,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:55:06,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:55:06,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:06,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1771125939, now seen corresponding path program 1 times [2022-11-19 07:55:06,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:55:06,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874745170] [2022-11-19 07:55:06,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:06,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:55:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 07:55:06,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:55:06,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874745170] [2022-11-19 07:55:06,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874745170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:06,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:06,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:55:06,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119713519] [2022-11-19 07:55:06,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:06,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:55:06,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:55:06,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:55:06,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:55:06,778 INFO L87 Difference]: Start difference. First operand 214 states and 296 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-19 07:55:07,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:07,158 INFO L93 Difference]: Finished difference Result 269 states and 366 transitions. [2022-11-19 07:55:07,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:55:07,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 59 [2022-11-19 07:55:07,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:07,161 INFO L225 Difference]: With dead ends: 269 [2022-11-19 07:55:07,161 INFO L226 Difference]: Without dead ends: 231 [2022-11-19 07:55:07,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:55:07,162 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 8 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:07,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1212 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:55:07,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-19 07:55:07,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 216. [2022-11-19 07:55:07,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 115 states have internal predecessors, (133), 83 states have call successors, (83), 18 states have call predecessors, (83), 18 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-11-19 07:55:07,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 298 transitions. [2022-11-19 07:55:07,192 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 298 transitions. Word has length 59 [2022-11-19 07:55:07,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:07,192 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 298 transitions. [2022-11-19 07:55:07,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-19 07:55:07,193 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 298 transitions. [2022-11-19 07:55:07,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-19 07:55:07,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:07,195 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:07,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:55:07,195 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:55:07,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:07,196 INFO L85 PathProgramCache]: Analyzing trace with hash 360017072, now seen corresponding path program 1 times [2022-11-19 07:55:07,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:55:07,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548043183] [2022-11-19 07:55:07,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:07,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:55:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 07:55:11,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:55:11,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548043183] [2022-11-19 07:55:11,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548043183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:11,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:11,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-19 07:55:11,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162420019] [2022-11-19 07:55:11,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:11,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 07:55:11,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:55:11,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 07:55:11,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:55:11,974 INFO L87 Difference]: Start difference. First operand 216 states and 298 transitions. Second operand has 14 states, 10 states have (on average 2.6) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-19 07:55:15,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:15,393 INFO L93 Difference]: Finished difference Result 315 states and 447 transitions. [2022-11-19 07:55:15,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 07:55:15,394 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.6) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 61 [2022-11-19 07:55:15,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:15,397 INFO L225 Difference]: With dead ends: 315 [2022-11-19 07:55:15,398 INFO L226 Difference]: Without dead ends: 313 [2022-11-19 07:55:15,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-11-19 07:55:15,399 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 205 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:15,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 1165 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-19 07:55:15,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-19 07:55:15,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 234. [2022-11-19 07:55:15,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 125 states have (on average 1.16) internal successors, (145), 127 states have internal predecessors, (145), 88 states have call successors, (88), 20 states have call predecessors, (88), 20 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2022-11-19 07:55:15,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 320 transitions. [2022-11-19 07:55:15,454 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 320 transitions. Word has length 61 [2022-11-19 07:55:15,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:15,455 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 320 transitions. [2022-11-19 07:55:15,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.6) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-19 07:55:15,456 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 320 transitions. [2022-11-19 07:55:15,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-19 07:55:15,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:15,463 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:15,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:55:15,463 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:55:15,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:15,464 INFO L85 PathProgramCache]: Analyzing trace with hash 249299340, now seen corresponding path program 1 times [2022-11-19 07:55:15,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:55:15,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032947146] [2022-11-19 07:55:15,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:15,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:55:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 07:55:21,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:55:21,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032947146] [2022-11-19 07:55:21,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032947146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:21,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:21,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-19 07:55:21,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889872926] [2022-11-19 07:55:21,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:21,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-19 07:55:21,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:55:21,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-19 07:55:21,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:55:21,481 INFO L87 Difference]: Start difference. First operand 234 states and 320 transitions. Second operand has 13 states, 10 states have (on average 2.9) internal successors, (29), 12 states have internal predecessors, (29), 7 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-19 07:55:24,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:24,213 INFO L93 Difference]: Finished difference Result 469 states and 644 transitions. [2022-11-19 07:55:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 07:55:24,214 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.9) internal successors, (29), 12 states have internal predecessors, (29), 7 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 61 [2022-11-19 07:55:24,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:24,216 INFO L225 Difference]: With dead ends: 469 [2022-11-19 07:55:24,217 INFO L226 Difference]: Without dead ends: 308 [2022-11-19 07:55:24,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2022-11-19 07:55:24,219 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 414 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:24,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1236 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 07:55:24,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-19 07:55:24,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 250. [2022-11-19 07:55:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 137 states have internal predecessors, (156), 94 states have call successors, (94), 20 states have call predecessors, (94), 20 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93) [2022-11-19 07:55:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 343 transitions. [2022-11-19 07:55:24,281 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 343 transitions. Word has length 61 [2022-11-19 07:55:24,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:24,281 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 343 transitions. [2022-11-19 07:55:24,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.9) internal successors, (29), 12 states have internal predecessors, (29), 7 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-19 07:55:24,282 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 343 transitions. [2022-11-19 07:55:24,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:55:24,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:24,283 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:24,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:55:24,283 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:55:24,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:24,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1682617456, now seen corresponding path program 1 times [2022-11-19 07:55:24,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:55:24,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911700833] [2022-11-19 07:55:24,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:24,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:55:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 07:55:42,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:55:42,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911700833] [2022-11-19 07:55:42,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911700833] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:55:42,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740476730] [2022-11-19 07:55:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:42,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:55:42,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:55:42,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:55:42,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18177535-eeb2-42c0-9d77-23f24e949d1a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:55:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:44,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 134 conjunts are in the unsatisfiable core [2022-11-19 07:55:44,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:44,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:55:45,711 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:55:45,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:55:45,838 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 [2022-11-19 07:55:45,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2022-11-19 07:55:49,774 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-19 07:55:49,774 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-19 07:55:54,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-11-19 07:55:54,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-19 07:56:00,990 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 3 [2022-11-19 07:56:01,008 INFO L350 Elim1Store]: Elim1 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 10 treesize of output 4 [2022-11-19 07:56:24,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:56:24,835 INFO L350 Elim1Store]: Elim1 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 60 treesize of output 44 [2022-11-19 07:56:24,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:56:24,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2022-11-19 07:56:27,802 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:56:27,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 125 treesize of output 109 [2022-11-19 07:56:27,944 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:56:27,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2022-11-19 07:56:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 07:56:28,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:56:31,366 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-19 08:04:36,191 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.