./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_array_ignore_case_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/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_8560a61b-fe50-467b-9786-641864f665d6/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_array_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/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_8560a61b-fe50-467b-9786-641864f665d6/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 a5cc7d054134727d17d186899e752bcb9b04f811a63c25a6e1e851147ab3514d --- 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 19:29:27,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:29:27,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:29:27,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:29:27,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:29:27,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:29:27,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:29:27,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:29:27,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:29:27,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:29:27,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:29:27,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:29:27,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:29:27,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:29:27,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:29:27,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:29:27,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:29:27,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:29:27,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:29:27,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:29:27,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:29:27,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:29:27,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:29:27,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:29:27,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:29:27,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:29:27,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:29:27,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:29:27,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:29:27,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:29:27,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:29:27,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:29:27,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:29:27,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:29:27,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:29:27,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:29:27,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:29:27,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:29:27,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:29:27,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:29:27,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:29:27,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 19:29:27,724 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:29:27,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:29:27,725 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:29:27,725 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:29:27,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:29:27,726 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:29:27,726 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:29:27,726 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:29:27,726 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:29:27,727 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:29:27,727 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:29:27,727 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:29:27,727 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:29:27,727 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:29:27,727 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:29:27,728 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:29:27,728 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:29:27,728 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:29:27,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:29:27,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:29:27,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:29:27,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:29:27,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:29:27,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:29:27,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:29:27,730 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:29:27,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:29:27,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:29:27,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:29:27,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:29:27,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:29:27,731 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:29:27,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:29:27,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:29:27,732 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:29:27,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:29:27,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:29:27,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:29:27,733 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_8560a61b-fe50-467b-9786-641864f665d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5cc7d054134727d17d186899e752bcb9b04f811a63c25a6e1e851147ab3514d [2022-11-16 19:29:28,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:29:28,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:29:28,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:29:28,043 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:29:28,044 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:29:28,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/aws-c-common/aws_hash_array_ignore_case_harness.i [2022-11-16 19:29:28,114 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/bin/utaipan-Xvt2sAort0/data/3eb9b7c80/7f1e62bfb50549ccbba23d02092c7b6f/FLAG99df2b227 [2022-11-16 19:29:28,981 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:29:28,983 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/sv-benchmarks/c/aws-c-common/aws_hash_array_ignore_case_harness.i [2022-11-16 19:29:29,029 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/bin/utaipan-Xvt2sAort0/data/3eb9b7c80/7f1e62bfb50549ccbba23d02092c7b6f/FLAG99df2b227 [2022-11-16 19:29:29,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/bin/utaipan-Xvt2sAort0/data/3eb9b7c80/7f1e62bfb50549ccbba23d02092c7b6f [2022-11-16 19:29:29,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:29:29,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:29:29,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:29:29,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:29:29,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:29:29,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:29:29" (1/1) ... [2022-11-16 19:29:29,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f831dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:29, skipping insertion in model container [2022-11-16 19:29:29,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:29:29" (1/1) ... [2022-11-16 19:29:29,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:29:29,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:29:30,048 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_8560a61b-fe50-467b-9786-641864f665d6/sv-benchmarks/c/aws-c-common/aws_hash_array_ignore_case_harness.i[4500,4513] [2022-11-16 19:29:30,056 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_8560a61b-fe50-467b-9786-641864f665d6/sv-benchmarks/c/aws-c-common/aws_hash_array_ignore_case_harness.i[4560,4573] [2022-11-16 19:29:31,471 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:31,475 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:31,478 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:31,480 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:31,482 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:31,512 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:31,513 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:31,518 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:31,519 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:31,996 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 19:29:31,997 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 19:29:32,000 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 19:29:32,002 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 19:29:32,007 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 19:29:32,010 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 19:29:32,014 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 19:29:32,016 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 19:29:32,018 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 19:29:32,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 19:29:32,250 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 19:29:32,345 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:32,345 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:32,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:29:32,513 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:29:32,544 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_8560a61b-fe50-467b-9786-641864f665d6/sv-benchmarks/c/aws-c-common/aws_hash_array_ignore_case_harness.i[4500,4513] [2022-11-16 19:29:32,545 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_8560a61b-fe50-467b-9786-641864f665d6/sv-benchmarks/c/aws-c-common/aws_hash_array_ignore_case_harness.i[4560,4573] [2022-11-16 19:29:32,594 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:32,594 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:32,595 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:32,595 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:32,596 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:32,604 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:32,605 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:32,606 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:32,609 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:32,672 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 19:29:32,673 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 19:29:32,674 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 19:29:32,674 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 19:29:32,675 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 19:29:32,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 19:29:32,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 19:29:32,677 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 19:29:32,677 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 19:29:32,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 19:29:32,696 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 19:29:32,741 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:32,742 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 19:29:32,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:29:33,031 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:29:33,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:33 WrapperNode [2022-11-16 19:29:33,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:29:33,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:29:33,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:29:33,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:29:33,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:33" (1/1) ... [2022-11-16 19:29:33,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:33" (1/1) ... [2022-11-16 19:29:33,254 INFO L138 Inliner]: procedures = 690, calls = 2600, calls flagged for inlining = 56, calls inlined = 3, statements flattened = 728 [2022-11-16 19:29:33,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:29:33,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:29:33,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:29:33,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:29:33,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:33" (1/1) ... [2022-11-16 19:29:33,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:33" (1/1) ... [2022-11-16 19:29:33,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:33" (1/1) ... [2022-11-16 19:29:33,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:33" (1/1) ... [2022-11-16 19:29:33,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:33" (1/1) ... [2022-11-16 19:29:33,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:33" (1/1) ... [2022-11-16 19:29:33,335 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:33" (1/1) ... [2022-11-16 19:29:33,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:33" (1/1) ... [2022-11-16 19:29:33,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:29:33,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:29:33,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:29:33,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:29:33,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:33" (1/1) ... [2022-11-16 19:29:33,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:29:33,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:29:33,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:29:33,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:29:33,457 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 19:29:33,458 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 19:29:33,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 19:29:33,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 19:29:33,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 19:29:33,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 19:29:33,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:29:33,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:29:33,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:29:33,461 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_array_ignore_case [2022-11-16 19:29:33,462 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_array_ignore_case [2022-11-16 19:29:33,462 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 19:29:33,462 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 19:29:33,462 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-16 19:29:33,463 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-16 19:29:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 19:29:33,463 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 19:29:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 19:29:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:29:33,749 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:29:33,753 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:29:35,018 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:29:35,163 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:29:35,163 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 19:29:35,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:29:35 BoogieIcfgContainer [2022-11-16 19:29:35,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:29:35,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:29:35,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:29:35,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:29:35,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:29:29" (1/3) ... [2022-11-16 19:29:35,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18953b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:29:35, skipping insertion in model container [2022-11-16 19:29:35,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:33" (2/3) ... [2022-11-16 19:29:35,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18953b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:29:35, skipping insertion in model container [2022-11-16 19:29:35,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:29:35" (3/3) ... [2022-11-16 19:29:35,186 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_array_ignore_case_harness.i [2022-11-16 19:29:35,214 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:29:35,214 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 19:29:35,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:29:35,293 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;@67b12762, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:29:35,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 19:29:35,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 19:29:35,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 19:29:35,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:35,310 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 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 19:29:35,310 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:29:35,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:35,319 INFO L85 PathProgramCache]: Analyzing trace with hash -352444336, now seen corresponding path program 1 times [2022-11-16 19:29:35,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:35,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444836266] [2022-11-16 19:29:35,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:35,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 19:29:38,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:38,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444836266] [2022-11-16 19:29:38,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444836266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:38,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:38,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 19:29:38,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199924892] [2022-11-16 19:29:38,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:38,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 19:29:38,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:38,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 19:29:38,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:29:38,139 INFO L87 Difference]: Start difference. First operand has 36 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 19:29:38,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:38,483 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2022-11-16 19:29:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 19:29:38,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 29 [2022-11-16 19:29:38,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:38,496 INFO L225 Difference]: With dead ends: 52 [2022-11-16 19:29:38,496 INFO L226 Difference]: Without dead ends: 33 [2022-11-16 19:29:38,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:29:38,503 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 12 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:38,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 147 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:29:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-16 19:29:38,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-16 19:29:38,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:29:38,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-11-16 19:29:38,545 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 29 [2022-11-16 19:29:38,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:38,547 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-11-16 19:29:38,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 19:29:38,548 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-11-16 19:29:38,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 19:29:38,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:38,550 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 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 19:29:38,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:29:38,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:29:38,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:38,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2094445040, now seen corresponding path program 1 times [2022-11-16 19:29:38,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:38,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554382793] [2022-11-16 19:29:38,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:38,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:38,650 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:29:38,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438215723] [2022-11-16 19:29:38,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:38,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:29:38,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:29:38,658 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:29:38,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8560a61b-fe50-467b-9786-641864f665d6/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 19:29:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:39,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 2335 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 19:29:39,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:29:39,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 19:29:39,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:29:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 19:29:39,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:39,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554382793] [2022-11-16 19:29:39,784 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:29:39,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438215723] [2022-11-16 19:29:39,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438215723] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:29:39,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1584755316] [2022-11-16 19:29:39,805 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-16 19:29:39,806 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:29:39,810 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:29:39,816 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:29:39,817 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:31:27,976 INFO L197 IcfgInterpreter]: Interpreting procedure aws_hash_array_ignore_case with input of size 2466 for LOIs [2022-11-16 19:31:53,154 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 2463 for LOIs [2022-11-16 19:31:59,827 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 44 for LOIs [2022-11-16 19:31:59,832 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_malloc with input of size 3253 for LOIs [2022-11-16 19:32:49,624 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_bool with input of size 3239 for LOIs [2022-11-16 19:32:53,575 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:34:04,806 WARN L233 SmtUtils]: Spent 1.18m on a formula simplification that was a NOOP. DAG size: 3235 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:36:30,875 WARN L233 SmtUtils]: Spent 2.42m on a formula simplification. DAG size of input: 3249 DAG size of output: 3246 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:38:57,858 WARN L233 SmtUtils]: Spent 2.44m on a formula simplification. DAG size of input: 3253 DAG size of output: 3250 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:41:25,326 WARN L233 SmtUtils]: Spent 2.44m on a formula simplification. DAG size of input: 3255 DAG size of output: 3252 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)