./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0 --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 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 --- 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-e04fb08 [2022-11-16 19:55:21,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:55:21,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:55:21,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:55:21,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:55:21,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:55:21,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:55:21,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:55:21,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:55:21,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:55:21,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:55:21,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:55:21,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:55:21,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:55:21,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:55:21,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:55:21,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:55:21,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:55:21,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:55:21,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:55:21,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:55:21,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:55:21,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:55:21,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:55:21,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:55:21,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:55:21,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:55:21,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:55:21,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:55:21,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:55:21,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:55:21,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:55:21,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:55:21,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:55:21,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:55:21,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:55:21,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:55:21,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:55:21,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:55:21,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:55:21,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:55:21,801 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 19:55:21,845 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:55:21,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:55:21,846 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:55:21,846 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:55:21,847 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:55:21,847 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:55:21,847 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:55:21,847 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:55:21,848 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:55:21,848 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:55:21,848 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:55:21,848 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:55:21,849 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:55:21,849 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:55:21,849 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:55:21,849 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:55:21,850 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:55:21,850 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:55:21,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:55:21,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:55:21,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:55:21,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:55:21,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:55:21,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:55:21,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:55:21,858 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:55:21,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:55:21,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:55:21,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:55:21,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:55:21,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:55:21,859 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:55:21,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:55:21,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:55:21,859 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:55:21,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:55:21,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:55:21,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:55:21,860 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_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 [2022-11-16 19:55:22,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:55:22,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:55:22,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:55:22,137 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:55:22,137 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:55:22,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2022-11-16 19:55:22,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/data/a967f92e5/4fc50057676143cf9124ce01f1af8bd1/FLAG33ec6dcae [2022-11-16 19:55:23,130 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:55:23,130 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2022-11-16 19:55:23,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/data/a967f92e5/4fc50057676143cf9124ce01f1af8bd1/FLAG33ec6dcae [2022-11-16 19:55:23,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/data/a967f92e5/4fc50057676143cf9124ce01f1af8bd1 [2022-11-16 19:55:23,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:55:23,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:55:23,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:55:23,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:55:23,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:55:23,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:55:23" (1/1) ... [2022-11-16 19:55:23,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a1d43d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:23, skipping insertion in model container [2022-11-16 19:55:23,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:55:23" (1/1) ... [2022-11-16 19:55:23,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:55:23,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:55:23,940 WARN L229 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_8c886973-4a9e-432e-8d19-f0309730a797/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2022-11-16 19:55:23,948 WARN L229 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_8c886973-4a9e-432e-8d19-f0309730a797/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2022-11-16 19:55:24,898 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:24,899 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:24,899 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:24,902 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:24,903 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:24,917 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:24,918 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:24,920 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:24,921 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:25,365 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 19:55:25,367 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 19:55:25,368 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 19:55:25,369 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 19:55:25,371 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 19:55:25,371 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 19:55:25,372 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 19:55:25,373 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 19:55:25,374 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 19:55:25,376 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 19:55:25,529 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 19:55:25,706 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:25,707 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:25,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:55:25,830 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:55:25,851 WARN L229 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_8c886973-4a9e-432e-8d19-f0309730a797/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2022-11-16 19:55:25,852 WARN L229 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_8c886973-4a9e-432e-8d19-f0309730a797/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2022-11-16 19:55:25,893 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:25,893 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:25,894 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:25,895 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:25,895 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:25,903 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:25,903 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:25,905 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:25,905 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:25,948 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 19:55:25,949 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 19:55:25,950 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 19:55:25,952 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 19:55:25,953 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 19:55:25,954 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 19:55:25,954 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 19:55:25,955 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 19:55:25,956 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 19:55:25,956 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 19:55:25,983 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 19:55:26,092 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:26,092 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:55:26,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:55:26,489 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:55:26,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:26 WrapperNode [2022-11-16 19:55:26,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:55:26,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:55:26,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:55:26,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:55:26,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:26" (1/1) ... [2022-11-16 19:55:26,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:26" (1/1) ... [2022-11-16 19:55:26,653 INFO L138 Inliner]: procedures = 691, calls = 2656, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 921 [2022-11-16 19:55:26,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:55:26,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:55:26,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:55:26,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:55:26,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:26" (1/1) ... [2022-11-16 19:55:26,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:26" (1/1) ... [2022-11-16 19:55:26,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:26" (1/1) ... [2022-11-16 19:55:26,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:26" (1/1) ... [2022-11-16 19:55:26,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:26" (1/1) ... [2022-11-16 19:55:26,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:26" (1/1) ... [2022-11-16 19:55:26,718 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:26" (1/1) ... [2022-11-16 19:55:26,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:26" (1/1) ... [2022-11-16 19:55:26,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:55:26,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:55:26,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:55:26,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:55:26,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:26" (1/1) ... [2022-11-16 19:55:26,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:55:26,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:55:26,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:55:26,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:55:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-16 19:55:26,839 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-16 19:55:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lexical [2022-11-16 19:55:26,840 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lexical [2022-11-16 19:55:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-16 19:55:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:55:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 19:55:26,842 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 19:55:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 19:55:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2022-11-16 19:55:26,843 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2022-11-16 19:55:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 19:55:26,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 19:55:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 19:55:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:55:26,844 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-16 19:55:26,844 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-16 19:55:26,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 19:55:26,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:55:26,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:55:26,845 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 19:55:26,845 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 19:55:26,845 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-16 19:55:26,846 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-16 19:55:26,846 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 19:55:26,846 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 19:55:26,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:55:26,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 19:55:26,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 19:55:26,847 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-16 19:55:26,847 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-16 19:55:26,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 19:55:26,848 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-11-16 19:55:26,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-11-16 19:55:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:55:27,230 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:55:27,233 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:55:28,750 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:55:29,035 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:55:29,035 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 19:55:29,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:55:29 BoogieIcfgContainer [2022-11-16 19:55:29,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:55:29,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:55:29,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:55:29,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:55:29,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:55:23" (1/3) ... [2022-11-16 19:55:29,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc3740c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:55:29, skipping insertion in model container [2022-11-16 19:55:29,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:26" (2/3) ... [2022-11-16 19:55:29,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc3740c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:55:29, skipping insertion in model container [2022-11-16 19:55:29,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:55:29" (3/3) ... [2022-11-16 19:55:29,052 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lexical_harness.i [2022-11-16 19:55:29,080 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:55:29,080 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 19:55:29,169 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:55:29,184 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;@78a8d348, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:55:29,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 19:55:29,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-16 19:55:29,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 19:55:29,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:29,203 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:55:29,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:55:29,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:29,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1136460855, now seen corresponding path program 1 times [2022-11-16 19:55:29,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:55:29,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519513335] [2022-11-16 19:55:29,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:29,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:55:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-16 19:55:38,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:55:38,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519513335] [2022-11-16 19:55:38,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519513335] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:55:38,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894290666] [2022-11-16 19:55:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:38,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:55:38,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:55:38,650 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:55:38,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 19:55:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:39,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 2674 conjuncts, 115 conjunts are in the unsatisfiable core [2022-11-16 19:55:39,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:55:39,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:55:39,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:55:39,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:55:40,780 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-16 19:55:40,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:55:40,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894290666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:40,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:55:40,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 28 [2022-11-16 19:55:40,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320222825] [2022-11-16 19:55:40,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:40,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 19:55:40,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:55:40,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 19:55:40,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-11-16 19:55:40,842 INFO L87 Difference]: Start difference. First operand has 120 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-16 19:55:42,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:42,274 INFO L93 Difference]: Finished difference Result 241 states and 338 transitions. [2022-11-16 19:55:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 19:55:42,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 82 [2022-11-16 19:55:42,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:42,288 INFO L225 Difference]: With dead ends: 241 [2022-11-16 19:55:42,288 INFO L226 Difference]: Without dead ends: 119 [2022-11-16 19:55:42,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 75 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=735, Unknown=0, NotChecked=0, Total=812 [2022-11-16 19:55:42,296 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 40 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:42,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 816 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 110 Unchecked, 1.3s Time] [2022-11-16 19:55:42,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-16 19:55:42,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-11-16 19:55:42,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 60 states have (on average 1.15) internal successors, (69), 62 states have internal predecessors, (69), 46 states have call successors, (46), 11 states have call predecessors, (46), 12 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-11-16 19:55:42,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 161 transitions. [2022-11-16 19:55:42,379 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 161 transitions. Word has length 82 [2022-11-16 19:55:42,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:42,379 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 161 transitions. [2022-11-16 19:55:42,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-16 19:55:42,380 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 161 transitions. [2022-11-16 19:55:42,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-16 19:55:42,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:42,388 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:55:42,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 19:55:42,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 19:55:42,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:55:42,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1337259722, now seen corresponding path program 1 times [2022-11-16 19:55:42,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:55:42,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060384080] [2022-11-16 19:55:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:42,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:55:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-16 19:55:49,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:55:49,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060384080] [2022-11-16 19:55:49,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060384080] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:55:49,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971512481] [2022-11-16 19:55:49,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:49,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:55:49,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:55:49,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:55:49,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c886973-4a9e-432e-8d19-f0309730a797/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 19:55:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:50,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-16 19:55:50,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:55:50,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:55:50,826 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 [2022-11-16 19:55:51,861 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 30 treesize of output 18 [2022-11-16 19:55:51,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:55:51,879 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 20 treesize of output 24 [2022-11-16 19:55:51,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-16 19:55:52,105 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 20 treesize of output 8 [2022-11-16 19:55:56,771 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 59 treesize of output 51 [2022-11-16 19:55:56,786 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 51 treesize of output 43 [2022-11-16 19:55:56,833 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:55:56,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 96 [2022-11-16 19:55:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 13 proven. 58 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-16 19:55:56,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:55:58,157 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-11-16 19:56:11,759 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.